Charlie Six - Why don't video game companies have "tip jars"?
Also, perhaps this incentive to donate could be provided: a promise that the short message attached to the donation is read by the developer receiving the donation (when you send payment to someone through Paypal, you have the option to send a message along with it). These messages could be requests for sequels. Or they could be requests that certain features be included in a current or future game. Multiplayer game balance suggestions. And so forth. No guarantee that any of these requests will be fulfilled, of course, but a promise that someone will at least take the time to read them. In this way, the donor feels their opinions as a fan are being heard. And the game developer may use these messages as a way to gauge public demand for new games, features, etc. A message with money attached to it has more weight than some feedback found in an e-mail or forum post, I'd imagine.

Smart Speak - Cliffski v Mark Rein – Much ado about nuthin.
For my part, if I’m at a roundtable discussion and someone interrupted me in this fashion – regardless of the reasoning behind it – I’m not going to wait until I get to my browser – then write up a vitriol laden blog post about it. I’d engage right there and then. A quick “Why don’t you just shut the hell up?” not only does the job, but it also guarantees that it is probably never going to happen again. There is a reason that such behavior is called Scorched Earth. There is no chilling period. At all.