I guess new ridership statistics count as news...
Note: No data given for Alameda County Transit, which would vie with VTA for third, IMO.
All data from APTA:
http://www.apta.com/resources/statis...rship_APTA.pdf
Agency - Average Weekday Ridership
San Francisco Muni - 805,600
Bay Area Rapid Transit - 354,800
Santa Clara VTA - 143,600
SamTrans - 48,200
Caltrain - 40,300
Golden Gate Transit - 29,600
Eastern Contra Costa TA- 8,700
Livermore/Amador Valley TA - 6,200
Capitol Corridor (shared with Sacramento) - 5,000