Your satisfaction with this depends on what sort of experience you're looking for. If all you want is a stock quote, a news headline, or an e-mail header, this may in fact be a preferable experience to getting this material from a standard Web site. You don't have to wait for the colorful graphics that don't have much information to load, and you don't have to wait for the advertisements you're not looking at to load. All you get is the specific information you asked for, nothing more. For precise queries, this is wireless Net connectivity at its best.
Speed is still an issue, though.
If you miss a bit of information, maybe a tenth of a second, while someone is speaking over a phone, you can still understand what is being said without trouble. But the same error will disrupt a data transfer entirely. Small business owners should consider the data they get via their cellular phones or PDAs as coming from the broader Internet, not the Web subset of the Internet.