Hey sunwooz, we are launching with select clients slowly and we will have a more general release by the end of summer.
Check out http://verold.com for an example in production. (Click Getting Started after signing in).
I just watched the tutorial. I just want to point out what happened. I started watching the tutorial and continued to eat my dinner. I had a feeling that it was more like a video than an interactive walkthrough so I ended up being stuck at the project creation page not realizing that I had to put input some information. The woman started talking about some stuff that were not visible on the screen so I got a little confused and started looking around to see if I missed something. Otherwise, the technology looks cool, but I don't want my users to be confused as I was.