NewPages Blog has been publishing since 2006 and it covers "Literary Magazines & Publishing, Alternative Media, Links to Good Reading." If you are trying to keep up with the comings and goings of literary magazines this is a blog for you. It also includes, among other things, contest announcements and "what I'm reading" posts.
This is a well-written, informative blog. What makes it a standout though, is the website behind it.
NewPages.com bills itself as "the Portal of Independents" and it includes reviews of books and magazines; a magazine stand with recent issues; directories of independent publishers (they are missing the NH ones though), independent booksellers (a good NH list for stores selling new books, a visit to the NHABA site would flesh out their used books listings), book review sources, literary magazines; and a tremendous list of internet resources for readers and writers (which didn't include this blog, but seemed otherwise very comprehensive).
If you are interested in books or writing, NewPages has a lot to offer.