@erictwillis Friend @forestgood used this with the hack.summit() virtual developers conference and I think it worked really well for them... thousands of tweets.
What's up! I'm one of the founders of Pay with a Tweet, hit me up with any questions.
Also, pwat got acquired by HanseVentures last year, so I sent a note to Caspar, their COO to answer anything I can't anymore :)
I've used it before and it's really easy to add to your websites. @Strikingly sites included. The free version is heavily branded (good growth hack) and I have yet to try the premium version. Good hunt.
Startup TV
Stomps
Startup TV
Cently
Public
Startup TV
Strikingly