Malware embedded into legitimate-looking games designed for Windows Mobile has appeared, automatically dialing up foreign telephone services to rig up hundreds of dollars in illicit charges for users behind their backs.
Getting an app from Apple’s app store is like buying something at a major chain store. You know what you are getting. Buying one for more like buying one at a street vendor. You never can be really sure just what you are getting.
Without someone to really vet the apps, there will be the danger of an app being malicious. I think many people will prefer buying from a safe place, even if it is not as wild and wooly as some of the developers want.