If I was a waitress I'd have a 'karma cup' or tips jar. I'm not so I don't. If you like the site and want to 'tip your hat' to its existence, drop a dollar in the hat/jar/cup!
Paypal's doing the secure payment honors so you can be sure your money's as safe as!
Go on, you know you want to!
If you donate more than $10US I'll place a link to you from my 'Friends of uchoo' page.