I came across Tipjoy a few months back and was intrigued with the concept of leaving people tips for web content. Well Tipjoy has finally expanded into Twitter.  After you link your Tipjoy and Twitter accounts, tweeting the following: p @kestrachern $1 because Tipjoy will match payments for Charity!  would send $1 from your tipjoy account to @kestrachern.  Best part is that Tipjoy and Betaworks (their investors) will match up to $10K of donations to Charity:Water through Twitter payments.  Tipjoy was started by Abby & Ivan Kirigin as a way to make it easy for people to leave tips for things they love online, and easy for content owners to be rewarded for making the stuff people love. And now it can be easily done via Twitter! If you don't yet have a Twitter account (Srsly?), you can also try the original non-Twitter enhanced version: