Might be a fun game for you night owls.
eg If you like Offspring you must like Blink 182. Personally I hate both.
You need to correctly predict that fans of band A will also like band B. If you name two bands and no fan of A chimes in slate band B then you win the internet.
If B gets dissed then you lose and get a spider put down the back of your shirt.
It will only work if people post honestly.
And of course it won't work if people don't post at all.