All About Romance website - here's how it works (and here's a link) - you are given a list of authors with suggestions for similar authors, so, for instance ... and I'm just making this example up ... if you like Suz Brockmann, you might be directed to the books of Cathy Mann.
Try it out - I found it to be very helpful and it led to try authors I might not have found on my own.
http://www.likesbooks.com/ifyou.html
Janet