Most active Twitter business accounts

We've got a big post coming tomorrow with lots of data gleaned from our directory of businesses on Twitter, but as an appetizer here's a list of the most active business accounts we've found so far. The number in parentheses is the number of tweets by these businesses in the last 30 days.

1. HiltonAnaheim (327)
2. WholeFoods (316)
3. Starbucks (292)
4. CoffeeGroundz (287)
5. hotel_max (283)
6. CafeMetro (280)
7. AZMuseum4Youth (275)
8. dogfishbeer (269)
9. Caffeposto (256)
10. tidbitbistro (255)
11. QueensMuseum (244)
12. BBQNYC (240)
13. WFM_Symphony (236)
14. PVATL (234)
15. TheWomensMuseum (226)
16. dennysgrandslam (217)
17. mallofamerica (211)
18. tasselridge (211)
19. theroxy (211)
20. lynfredwinery (210)