A better title might be, "The most tip-worthy users on the bitcoin forum". And even that would be inaccurate, because it assumes that everyone who puts an address in their signature has not re-used the address for other transactions. Kinda interesting to see which forum users are having the most success with their tip jars, though!
Damn straight. The one I list for begging is the one I used to receive my payout from the faucet. Interestingly some even have less than me.