The excellent Christophe Guignard has started his own blog (in French), on details of ancient Christian literature and its Graeco-Roman context. It’s called Marginalia.
He’s just done a post in both English and French on a “new” uncial fragment of John’s Gospel (0323).
He’s also interested in Syriac mss. at Sinai.
I think I shall add it to my RSS feed.