Mine is
Write Thing, and it's still in its infancy.
The site's about ways to grow as a writer. I figure there's enough generic, boring articles out there on the 'normal' things to do - get up early, revise, blah blah blah - but authors tend not to go into specifics.
So what my blog aims to do is provide interesting, unusual material for writers to bounce ideas off, and hopefully help out with improving specific areas of their writing skill.