I really like the concept/look of this app, here's hoping an Android version [1] materializes.

"From those visits, we had 3,200 users initiate 13,000 conversations powered by Mantaphrase."

Somehow, I'd have expected more conversations per user. Any insight as to how many casual versus frequent users you've ended up with?

1: http://news.ycombinator.com/item?id=4632880