I have never used Twitter or Facebook and no plans to start, so those apps are useless to me, but I cannot delete them from my phone. Another is the Amazon MP3 app, which is useless in Canada because they won't sell to Canadians and the Canadian Amazon doesn't sell MP3s. However, it did work when I was in the U.S. last week. It's another app that I can't delete. I have also added several apps, some of which I use frequently, and others, seldom. So, people may have some apps they don't use because they came with the phone and they can't get rid of them.