I'm on an email listserv for mystery readers called DorothyL
The blog was mentioned there. There are a lot of authors on the listserv as well. I don't read it as often as I used to, because I don't have the time, and there are too many links to blogs for my taste (I prefer posts about books), but might be great for you. You can still find a lot of new authors there, and it's very exciting actually to 'meet' some of them. If you are interested in joining it, go to http://www.dorothyl.com/ I've been on it for 12 or 13 years - I joined it about the same time I joined Gail's - and it's really made it easier to find books I like.