No Market Share movement for WordPress 2.9 yet sorry.
Get a list of 67,124 websites using WordPress 2.9 which includes location information, hosting data, contact details, 16,031 currently live websites
and an additional 17,756 domains that redirect to sites in this list. 51,093 sites that used this technology previously and 7,707 websites in the United States currently using WordPress 2.9.
Distribution of locations of all WordPress 2.9 customers we've ever tracked.