I created a new profile and deleted the old one. This not only prevents old things from popping up, but also gave me a free friends list cleanup. A few people didn't see the announcement, but they have just re-added me later, when they realized what happened. Obviously, this option will shrink your friends list by quite a bit (in my case by around 75%), and it is important to remember that people who don't add your new account aren't necessarily unsupportive, it can also be because you never speak and they don't see a point in adding the new profile (one person actually wrote me and told me this, while expressing his support), or it could be that they didn't see the announcement. Facebook doesn't even show posts you write to everyone on your friends list, so it's almost impossible to reach everyone; I repeated my message thrice, with a few days in between each post, before deleting my profile, and still everyone didn't notice. Knowing that, it might actually be easier than seeing people unfriend you, since the latter is active while the former is passive. All in all, I'm happy I chose this option, it worked out nicely.