How many active ones?
I don't feel comfortable providing that number, but I can talk a bit about how the Trello team would answer it. The concept of "active" isn't really a cut-and-dried thing. Do you count people who merely look at Trello, or do they have to do something? If they have to do something, then what is "something"? If I do one "something," is that enough, or do I have to do a couple? What if someone does that on my behalf (i.…
To be honest, I would be really really interested how many active users Trello has. It would be great service to startup community to see what is conversion rate out there for bigger services like Trello.
Evernote is very public with their numbers, for example they claim 1/3 of total sign-ups being active users (users who logged into service in last month).