I moved from the Facebook app to the web interface, and when it gets really bad, I just close it and do something else, hoping it will teach it something.

Don't give me a 'stop seeing this ad' button? Disengage.

Show me the same damned solar ad for the second dozen times? Disengage.

Keep showing me 'do you know this person' every third page? Disengage.

Also, I've found I just don't contribute anymore. Reddit has become a Read Only site...because there are so many people contributing, there's no way what I'm going to contribute hasn't already been posted by 4 other people, higher up in the algorithm.