I read in an article this morning that the Series A round was a few VC firms and some angel investors (accredited) too. I emailed Trello this morning to see if the round had completely closed or not, and they replied back saying the round had closed.
In order for an angel investor to get into a hot company like Trello, they need to be very close with the company/founders or they need to really show they can add value as an investor. Since Trello has amazing traction, is likely profitable already, and has proven leadership, they can choose from any investor they like.
I heard that Square's Series A was very hot (a while back). Kevin Rose ended up making a viral video about Square and then begged/asked to get into the round, and they let him in.
Thanks Dave..no VIP here...well maybe to my kids...guess I will keep investing in them.