I like this idea (a sort of adnauseum for facebook) but I wonder how trivial it would be for facebook to filter out obviously random/fake/noisy data given the mammoth set of real data they already have. Maybe introduce some more subtle off-by-one errors into their data or just make it a tiny bit fuzzier? Hopefully one wouldn't need a detailed knowledge of their data structures to do something impactful, although the action itself might be a useful symbolic gesture even if it doesn't have an actual impact on their data collection.
Yeah some kind of slow incremental behavior shift towards something would be more insidious. Maybe allow the user to define a rotating theme of the week. This week I like dinosaurs, so the plugin will slowly ramp up dinosaur related behaviors (whatever that may mean :)). Next week I like unicorns...etc.
What I do is randomly give shit data to them, some of my real friends confirm it who are in on it. Sometimes I just copypaste whatever random shit I had in another tab - then delete it, sometimes Like things I dont like, but not too often. Ive even uploaded my own pictures (nobody actually visible) from years ago with modified Exif data - its for shits and giggles as they say. Accept those weird friends, but not all, send some friend-requests myself. Comments no, no real messages initiated by me, most of the times try responding with other methods. Facebook only in incognito mode on full screen at all times with windows user-agent.
Been doing this for 3-4 years already. Was fun but now I visit it every other month or so.
Instead of transmitting obviously fake data, record the genuine data of other users (randomly and anonymously, of course) and retransmit it. It poisons the association while being much more difficult to fuzz out.
A few of us were joking about poisoning the location tracking database of site along a similar vein. Have an app masking your location to some place in the pacific ocean to any app running in the background asking for location (without the user's intent of using it).
Why stop there? Create a service that will spoof GPS coordinates, check you in, and post generic photos of fun places to be, so you can outsource your social bragging through automation.
On Android, Xprivacy uses hooks provided by Xposed to "MitM" a lot of functiom calls. Don't want an app to know your phone's serial number? That function call returns a spoofed one. Same with GPS location.