All of the other XenForo sites that I'm active in have that limit, and seeing that I'm still stuck at 400 without going to my full potential does make me sad a bit. Not too sad though, cause y'all are quite awesome.
Blogs aren't something I generally need unless I want to document something that I'm interested about in greater detail. Whereas, if I wanted to talk about anything that's on my mind, or anything that I don't consider that is good for a blog post, I'll write about it as a user profile post.