Tyler Williams has posted some interesting posts on The textual criticism of the Hebrew Bible .
Julian Jensen has started a blog called Text Crit which seems to be going to focus on computers, technology and biblical textual criticism.
M. Leary has an interesting recent post about the Penn Papyri Project, and (hopefully) ongoing posts about his work on Book Culture in Early Christianity (ekthesis - cool name for a blog).
Rob Bradshaw republished a short piece by F.F. Bruce on the (Chester Beatty Papyri ) [which is both interesting and pretty dated as it comes from 1934].