A recent study found that only 30 percent of people who purchased an iPhone app actually used it the next day; for the same group, only 5 percent were using it 20 days later! And those are for paid apps; the stats get worse for free apps, and I can understand, because who hasn't bought a novelty app they abandon after showing it off a couple times?
I have the same few trusty apps I use all the time, and I am finding new ones I can't live without every day, but I would say that for every one really great app that I have and use continually, there are five that have been downloaded and barely touched since.
For these, I'd be ecstatic to be able to return them for reasons of boredom or little usage. What about you? Do you use all the apps you download, or end up abandoning some?