Salesforce is very sneaky in presenting their service to the business public. Their billing is deceptive; although they quote monthly pricing, you'll get a bill in advance for the first year. In fact, they'll tell you they don't have monthly billing frequencies; minimum is quarterly. If you try to change the billing frequency you'll get billed in advance for the next quarter plus. They try to get as much money from you as possible, in advance. If you try to change the number of active seats be careful. Your account exec will dummy up and act as if they don't know what you're trying to accomplish. The best thing to do is stay away from them. They'll try to use strong arm tactics to collect from you; a company out of the east coast, AMS a collection company. I've been in business many years and have never run across a company like Salesforce.com.

These guys are very difficult to work with, but ultimately i cant really find anything better, ive been around the block, if they were more straightforward and were an "easy in, easy out" org like basecamp they would own the market and their reputation would be flawless.