Kimberly
Killion, historical romance author. She has some really neat
information for readers and writers.
Lee
McKenzie is another Harlequin American author with an interesting
blog.
Romance
Writer's Revenge is a site I just purely enjoy for the fun.
It also has interesting posts, especially if you're a Pirates of
the Caribbean fan.
CataRomance
started out devoted solely to category romance (what's now Harlequin
and Silhouette) but branched into single title.
Fresh Fiction
has so much book stuff, you might get addicted. All genres, and
intriguing author blogs.