Another one: if I know someone's user name I can't add them through the "Find & Invite Friends" page under options, I can only do it through the explore page.

Another one: if I know someone's user name I can't add them through the "Find & Invite Friends" page under options, I can only do it through the explore page. Also, the forced cropping of pictures taken outside of the app is by far the most annoying UX thing from my perspective.