This seems to be a rather eccentric list of leading contemporary atheists: supposedly "50 Top Atheists in the World Today". Some of the people there are rather questionable for such a list - but that's almost a matter of taste when you're looking at folks from so many backgrounds and it's largely comparing apples with oranges.
Conversely, and perhaps more importantly, some major contributors to the philosophical defence of atheism are not there at all. Given that Michael Martin and Quentin Smith are ranked so high, why are Graham Oppy and Michael Tooley (for example) not there, and in positions almost as high?
However, there are some pleasing inclusions that I wouldn't have expected, such as Sumitra Padmanabhan. (Then again, if you're going to include her, which I totally support, why not also include Prabir Ghosh, who actually has a higher profile ... or so I would have imagined?)
All in all it's a bit weird.
For what it's worth, about 8 or 9 of the 50 people on the list contributed to 50 Voices of Disbelief. (I suppose I should count again to check the exact number, but laziness overcomes me...) The person who comes highest on the list, Peter Singer, is one of our contributors.
I'm not saying that that's a high figure, or that it proves anything one way or another. I was just interested to have a look at the list and do a rough comparison.