The First Photoblog was on Usenet
Textamerica brought photoblogs to the mass-market, but Brad Brace has been doing for nearly 10 years. He has been uploading a photo to the Internet every 12 hours since December 30, 1994. The 12hr-ISBN-JPEG project is a continuous posting of "sequenced hypermodern imagery," usually black and white photos of city life, which are simultaneously posted to FTP sites, mailing lists, and Usenet's alt.12hr newsgroup.
I was never a Usenet junkie (beyond technical and reference material searches), but I know that Usenet has a long history that predates the Web by more than 10 years. I wish I would've been online and on the 'net more then.
Thanks to waxy.org for the link.