Here are a few hot blogs I stumbled across today:
Miro Collas
Black/black domination themed but a few white-guy posts. Also has some leather and watersports which I find a turn-on.
Big Black Cock
Tumbler page of above blogger.
Furboi's Hot Men: Black
Not a black-themed blog, but has a lot of black posts. The link is to the black posts only but there are a few black men posts that aren't black tagged. I hope that doesn't sound confusing.
UnrulyDude UnrulyDude
Once again, not black themed but nearly every gallery posted has some black dick in it.
The first three focus on the older, masculine, bear-type man and UnrulyDude focuses on the younger 18-25 type. I recommend checking Furboi out first, mainly because the first black post is a fucking hot bear-daddy! He is HUGE! All beef and tattoos...beautiful!
EDIT: Here's another one I just found. Some people may be offended by the title but don't blame me - I'm not the person who names them.
http://allniggaworship.blogspot.com/
Plus all the blogs listed above have links to other hot ebony blogs.