Fleshbot
A famous sex blog about the porn industry, featuring reviews and news, from every possible angle. Besides the mainstream porn they often write about photography, sex on the web, and art.

Rare Erotica blog
Quite a collection of rare erotic material from the past, mainly photographs and prints.

Erotismo Creativo
I Love this one, it has an healthy and artistic approach, nice stories and links. You need to master the Spanish language though.

Tiny Nibbles : Violet Blue
Violet Blue, professional blogger, writer and what not. She's called the leading sex educator for the Internet generation, I guess thats enough to keep you entertained for a while.

IDGA Sex Blog
Not the typical erotica blog, this time it's all a bout sex & games. The blog is a project of Brenda Brathwaite, an expert on the subject.

Mistress Matisse's Journal
Seattle writer/professional dominatrix's personal musings, rants and life-trivia.

Sexoteric Blog
A collection of erotic curiosities for adults, thats how they describe themselves. It's an entertaining mixture of news, erotic art, gimmicks & gadgets.

This list of sex blogs is far from complete, I have quite a few more that are worth visiting, and new ones are popping up every day. I will make this a regular topic on the Art of Love, if you run, know or recently discovered an interesting blog, let me know about it here.