Just came across a super neat resource today! Founded by Terri Ann of the blog, Childlike Fascination, the Quiltalong.net site catalogs ongoing and past Quiltalongs, Mystery Quilts, Block-of-the-Month series, and daily link parties. Terri Ann also writes a pretty interesting blog in conjunction with the site --- I'll be visiting regularly. Oh, and maybe sign up for the newsletter.
What a nifty idea!