Here's a great site for mystery writers, publishers, readers and pals to connect. THE WEB OF MYSTERY
Their mission: to bring together mystery website administrators and others in an attempt to create the most comprehensive database of mystery-themed links. A noble pursuit, it seems to me.
It goes without saying that Marilyn Meredith, Kit Sloane and a several other OTP authors were already there...but if you aren't on the site, take a moment and add yourself. It's fast, it's easy and it's free!