For several years now, The Cimmerian Blog has been the main informational site for Howard fans, and so much more. As the subtitle says, a website for "...the best in heroic fantasy, horror and historical adventure." From 2004 to 2008, The Cimmerian was the premier
You can read two good (short) histories of TC and its place in Howard fandom at the Two-Gun Raconteur blog and at the REH United Press Association blog.
Besides the high level of quality inherent in the articles posted there, what I'll miss most is having just one place to go for news. It appears that the articles will be archived at the website of the editor, so past articles won't completely disappear. Any new articles from the team of contributors will be spread among a half-dozen blogs and forums.
I'm also disappointed that I never picked up any print issues of TC. Yet another reason to purchase collectibles and rarities when you have the chance...