Davidlowbridge commented on the following stories on BizSugar
I have used most of them at some point in the past. TinyURL is the best for keeping trust, but still, research has found that shortened URLs erode trust between audience and brand. It is mainly because they can't be sure of where they are clicking through to. Another downside of TinyURL is it can often be longer than others and on one or two occassions, their preview shortened URL was longer than the original."