The roach motel of
wiki hosting: they check you in, but they
don't let you check out. They promise to host your
wiki for
free, but then they plaster it with intrusive advertising, restrictive rules and unsightly reskins. And, when you want to leave their site for good, you
will realise that you could not as the mentally unstable staff in their site would harass you, threatening to leak your IP address, email address, as well as any other personal information that you had once given to the site. As icing on the cake, you would also be forced to rejoin their platform due to domain duplicate penalties, to get them more advertisement views and to feed them with 𝘮𝘰𝘳𝘦 information which they would
later use against you to prevent you from leaving.