Looks like you're covering a wide gamut of services... nice. Great looking site too, nice and clean, easy to find information.
My only drawback is that I tend to be REALLY paranoid about where my information is stored due to my past career. As I don't personally have access to the physical hardware that the info is being hosted on, I'd have some issues recommending this for my team - but... for folks who are OK with the "cloud" computing (extranets) thingy, this looks like a great service.
What kind of data protection is in place? What kind of backup strategy are you using? What hardware failure policies do you have in place for my multi-million dollar production (I wish!) to trust your service in the midst of the production?
These are just questions for you to consider, but are no-sale things for me, sorry... if you would allow your service to use hardware/servers other than your own, I'd be all over it.