The thing is Steph is absolutely spot on here. I once, using a different sign on, tried to start a small cinema and coffee club in London for TMF type people. Predictably the only response I got was a couple of people telling me why it wouldn't work.
If I was twenty years younger, and didn't have so many other interests I admit I would try harder with this. Stephs point of friendship first, tickling second, however should be borne in mind for everyone. Especially as it is likely to lead to repeat/regular tickles.