I wasn't aware SF had a Christian quota.
Normally, I would hesitate to assign "tone" to the original question of this thread. I have no need to hesitate here, however.
Whereas it is true that Mel White is a Christian and King was a Christian, Gandhi was not, and (with the exception of an image of King paired with Gandhi's in the site's masthead) there is no mention of "Christianity" per se in the call to action: Freedom for lesbian, gay, bisexual, and transgender people from religious and political violence through the practice of relentless nonviolent resistance.
To have assumed otherwise, betrays anything from an inattention to detail to a potentially malicious Christo-centrism.
Ironically, I first came to this site after Googling "gay" and "christian". I found GCN through the same search. I ultimately left GCN because I became uncomfortable with a) the degree of closetedness, b) the "Side B-ers", and c) the site's stated "beliefs". The site is, in essence, a "church" -- and not one to which I wanted to belong. I also felt uncomfortable with the lack of non-Christians, though I could hardly fault them for this; there is a "C" in "GCN". Regardless, it felt constricting and I was done. On the other hand, I've stayed (to varying degrees over time) with SF precisely because we are a mixed bag. Frankly, I wouldn't mind if I were the only Christian here, as long we were still focusing on the religious and political oppression of gay people.
To ask "are there any Christians on this site anymore" is to suggest a) there were Christians here, b) there is now a lack of them, and c) this is something to be lamented. In short, the question is ipso facto offensive and should be recognized as well as decried as such.