If you want to geek out on Skype user metrics, Jean Mercier is your guy.
Today, Jean posts some juicy Skype data on Skype Journal.
Turns out that on Sunday, February 18, at about 19:00 GMT (that's 2 p.m. ET) Skype logged 12 million concurrent sessions for the first time ever.
There's something to be said for the timing of this threshold. Took place on a Sunday. Since few business calls are made during that time, this points to Skype's predominance as a consumer service. I mean, Skype like to talk of their small and medium business relevance, but I just don't see it yet.
Jean also notes that:
In the past the peaks were somewhere between 16h and 17h GMT. Now it occurs about two hours later. This shows a recent growth in the Americas. Or, in other words, they are catching up with the usage rate of the Europeans.
On that, I agree.