I'm not really sure what kind of blog your looking for - do you want advice and tips, or an over-inflated narrative of "sorority life?"
If you want help and advicae, maybe you should look for general student leadership blogs. My favorite is T.J. Sullivan's blog:
http://tjsullivan.com/blog/ He talks a lot about Greek Life, but the blog is focused on student leadership.
Cue spam.