How odd - I thought there were far more back in the day. Or rather far more vocal 'You're going to hell!' or 'You're not a real Christian because you don't do X/Y/Z' types, who self-defined as Christians.
In reality, though, none of us can know how many Christians there are on Bloop. Just because someone doesn't write about God all the time doesn't automatically make them not a Christian. And also, just because someone does write about God all the time, that doesn't necessarily mean they are a Christian! Only God can really know how many Christians are on Bloop.
So it makes more sense to talk in terms of the proportion of people who write 'God blogs', I guess! ;D And it would make sense that they are probably less than half of Bloop. Which doesn't necessarily make them a minority - there are a variety of other things a person can be other than Christian, and a variety of other types of blog a person can write other than a 'God blog' (whether or not they are a Christian).
I've noticed groups of certain types of diary - the mommy diaries, the 'God blogs', the kinky sex diaries, the survey diaries. And some of these can overlap with each other.