If you’re looking for a place to put a shoutout about your published works out there, the blog by Lars Kaiden offers an ebook shoutout page. You can fill out a form with a description of your book (up to 200 words) and a link.
It’s also free. So, run over there and check out what’s been posted and post a link to your own. Be nice, don’t send in everything you’ve done at once. And perhaps return the favor by putting up a shoutout on your blog, twitter, facebook, etc.