Explain how you plan to make money.
Having seen the recent "roadmap" blog post, I feel that Feedly is shaping up towards being a good GReader replacement. However, one thing makes me very nervous: A free service with no obvious business model.
It would make it much easier for me, and probably other potential users, to trust you, if you could offer some transparency - perhaps a blog post on how you plan to make money?
Corey Vantilborg commented
I think this is the biggest question that needs to be answered.