I'd like to suggest that those of you talking about bumble bees and other pollinators read post # 15 that I just posted in the starting from seed Forum
http://tomatoville.com/showthread.php?p=426235
I think you'll be surpised at a lot of what's said in the two links I gave, especially the second link as to the pros and cons of pollinators, which crops they prefer and why and be sure to read the section on tomatoes as well.
Carolyn