Day In Black History . com ~ Community driven, interactive online periodical about the Black experience
I have to say, this site is an example of "form and function." Dayinblackhistory.com not only looks good, but it's one of the few black history sites that have a social twist to it. Members can "adopt" existing historical articles, post new ones, vote on them, comment on them, vote in polls--and I believe they'll soon have a forum.
I think there's a year-end reward for the most active users, but they seem to keep the prize secret.
They just launched and are growing--I've adopted and posted some interesting articles up there myself, but I figured I'd let all you history buffs out there get a piece of the site too!