I have found the following two links helpful when considering data anonymization and privacy issues in general.
Some researchers in linguistics (in my acquaintance) have been less than excited about the notion of asking for socio-linguistic data or socio-personal data from language informants. The objection has been that it is just bad form. While I am a great advocate of personal privacy (especially in digital formats), I see that one of the most informative parts of the language documentation process is understanding who the speakers being recording or being worked with are. Language variation is fundamentally connected with identity. While crucial elements of how a community segments itself along identity lines may not be known for several years, having a robust socio-cultural or socio-personal questionare about the language informants will later help place the documentation data in perspective of the larger waves of variation in the community.
This is to say, I am thoroughly convinced that a socio-linguistic questionare is important as part of the language documentation process. It might not need to be done first, but it will help researchers and future users of archived material understand where to place these speech samples in context of that speakers society.
The outstanding question, and one with a variable answer is how to appropriately approach the questions in the questionare. Should the questionare be approached formally? Or should it be asked in conversational format? Should it be elicited digitally? One of the interesting things about eliciting things digitally is that they may have the appearance to be less intrusive because they are less formal. While I have no empirical evidence based on years of cross cultural work, I do have the Facebook phenomena. That is minority language users all over the world are using Facebook. And Facebook is collection (and allowing the users to volunteer) and then verifying the users’ provided data.
Below is a list of elements which Facebook is collecting (it is also collecting log-in locations and times). So, some of these questions are certainly in-scope of what language documenters would minimally like to know about their indigenous language speaking informants and collaborators. Others of these questions are certainly not in-scope for the recommended socio-linguistic profile from language documenters or socio-linguists.
FaceBook data catagories on user profiles.Data Facebook Collects about users through their profile and activities.
from: https://www.facebook.com/help/326826564067688 on 23 August 2012.
|What info is available?||What is it?||Where can I find it?|
|About Me||Information you added to the About section of your timeline like relationships, work, education, where you live and more. It includes any updates or changes you made in the past and what’s currently in the About section of your timeline.||Activity Log|
|Account Status History||The dates when your account was reactivated, deactivated, disabled or deleted.||Expanded Archive|
|Address||Your current address or any past addresses you had on your account.||Expanded Archive|
|Alternate Name||Any alternate names you have on your account (ex: a maiden name or a nickname).||Expanded Archive|
|Apps||All of the apps you subscribe to.||Expanded Archive|
|Birthday Visibility||How your birthday appears on your timeline.||Expanded Archive|
|Chat||A history of the conversations you’ve had on Facebook Chat.||Downloaded Info|
|Check-ins||All of the places you’ve checked into.||Downloaded Info
|Connections||The people who have liked your Page or Place, RSVPed to your event, installed your app or checked in to your advertised place within 24 hours of viewing or clicking on an ad or Sponsored Story.||Activity Log|
|Currency||Your preferred currency on Facebook. If you use Facebook Payments, this will be used to display prices and charge your credit cards.||Expanded Archive|
|Current City||The city you added to the About section of your timeline.||Downloaded Info|
|Date of Birth||The date you added to Birthday in the About section of your timeline.||Downloaded Info|
|Deleted Friends||The people you’ve unfriended.||Expanded Archive|
|Education||Any information you added to Education in the About section of your timeline.||Downloaded Info|
|Emails||Email addresses added to your account (even those you may have removed).||Expanded Archive|
|Events||Events you’ve joined or been invited to.||Activity Log|
|Family||Friends you’ve indicated are family members.||Expanded Archive|
|Favorite Quotes||Information you’ve added to the Favorite Quotes section of the About section of your timeline.||Downloaded Info|
|Friend Requests||Pending sent and received friend requests.||Expanded Archive|
|Friends||A list of your friends.||Downloaded Info|
|Gender||The gender you added to the About section of your timeline.||Downloaded Info|
|Groups||A list of groups you belong to on Facebook.||Downloaded Info|
|Hidden from News Feed||Any friends, apps or pages you’ve hidden from your News Feed.||Expanded Archive|
|Hometown||The place you added to hometown in the About section of your timeline (profile).||Downloaded Info|
|IP Addresses||A list of addresses where you’ve logged into your Facebook account.||Expanded Archive|
|Last Location||The last location associated with an update.||Activity Log|
|Likes on Other’s Posts||Posts, photos or other content you’ve liked.||Activity Log|
|Likes on Your Posts from others||Likes on your own posts, photos or other content.||Activity Log|
|Likes on Other Sites||Likes you’ve made on other sites off of Facebook.||Activity Log|
|Locale||The language you see on Facebook is based on where you’re located.||Expanded Archive|
|Logins||IP address, date and time associated with logins to your Facebook account.||Expanded Archive|
|Logouts||IP address, date and time associated with logouts from your Facebook account.||Expanded Archive|
|Messages||Archive of messages you’ve sent and received on Facebook.||Downloaded Info|
|Name||The name on your Facebook account.||Downloaded Info|
|Name Changes||Any changes you’ve made to the original name you used when you signed up for Facebook.||Expanded Archive|
|Networks||Networks (affiliations with schools or workplaces) that you belong to on Facebook.||Expanded Archive|
|Notes||Any notes you’ve written and published to your account.||Activity Log|
|Notification Settings||A list of all your notifications and whether you have email and text enabled or disabled for each.||Expanded Archive|
|Pages You Admin||A list of pages you admin.||Expanded Archive|
|Phone Numbers||Mobile phone numbers you’ve added to your account.||Expanded Archive|
|Photos||Any photos you’ve uploaded to your account.||Downloaded Info|
|Physical Tokens||Badges you’ve added to your account.||Expanded Archive|
|Pokes||A list of who’s poked you and who you’ve poked.||Expanded Archive|
|Political Views||Any information you added to Political Views in the About section of timeline.||Downloaded Info|
|Your Posts||Anything you posted to your own timeline, like photos, videos and status updates.||Activity Log|
|Posts by Others||Anything you posted to someone else’s timeline (profile), like photos, videos and status updates.||Activity Log|
|Recent Activities||Actions you’ve taken and interactions you’ve recently had.||Activity Log|
|Registration Date||The date you joined Facebook.||Activity Log|
|Religious Views||The information you added to Religious Views in the About section of your timeline.||Downloaded Info|
|Screen Names||The screen names you’ve added to your account, and the service they’re associated with. You can also see if they’re hidden or visible on your account.||Expanded Archive|
|Searches||Searches you’ve made on Facebook.||Activity Log|
|Spoken Languages||The languages you added to Spoken Languages in the About section of your timeline.||Expanded Archive|
|Status Updates||Any status updates you’ve posted.||Activity Log|
|Subscribers||A list of people who are subscribed to you.||Expanded Archive|
|Subscriptions||A list of people you subscribe to.||Activity Log|
|Tag Suggestions Template||A unique number based on a comparison of the photos you're tagged in. We use this template to help your friends tag you in the photos they upload.||Expanded Archive|
|Work||Any information you’ve added to Work in the About section of your timeline.||Downloaded Info|
|Videos||Videos you’ve posted.||Activity Log|
I have been playing around with data available from the iPhone (and also separately visualizing Map data).
I came across a project, iPhoneTracker which was done to show iPhone users the kind of data that the iPhone collects about a users travel and whereabouts. I downloaded the app and ran it. Looks like about a complete history since I activated the phone… The interesting thing for me was that this app did not collect the data from my phone directly but rather from my computer.