Thats just a brief over-view as there are more to choose from. Woofs, the gay sports bar, is also nearby in Lindbergh. Heretic along with the Eagle (located in south midtown) are traditionally leather bars. Those are much more club-like in atmosphere.
Continue north onto Cheshire and that's where you'll find Jungle and Heretic. Burkhart's will be similar to Blake's crowd-wise. Headed north on Piedmont you hit Ansley Mall, which houses Burkhart's and several smaller gay bars. You also have several LGBT-oriented restaurant/bars in the area including, 10th & Piedmont, Henry's, Joe's, and Einstein's. Bulldogs is a couple blocks away and skews towards a black clientele. At the center of it all, 10th and Peachtree, you'll have TEN and Blake's. There is not much in the way of nightlife downtown, most of it will be located just to the north in Midtown.
In the back it lists the location of all the places you need to know and whatever events are going on that week. Check out David Atlanta like another poster mentioned.