Better FB integration and better iPhone app
I should be able to add friends from my FB friend list and then ur site should email them. It's really inconvinient to ask ppl for their emails every time.
Also, there is no "sign in with FB" button on your home page. If you are trying to implement "FB sign in", then it should be so seamless that I NEVER have to input ANY email ids or passwords!
Also, your iPhone app sucks! Please make it better and allow all functionality, that's there in the web app, on the iPhone app!

I’m declining this because it’s a dupe of another ticket. Feel free to add your votes there.
We’re working on ways to better integrate other services into ours (gmail, facebook, ect.)
We apologize for this, but we haven’t had time to include Facebook login on iPhone or Android yet. The reason why it’s been such a low priority is that Facebook login has not been especially popular users thus far and doesn’t add a lot of functionality.
We don’t have any plans to add facebook login on the phones soon, but you can work-around this issue by “resetting your password” on the website, and typing in the email address of the email associated with that facebook account.
As for the iPhone app, we’ve been adding so many features to the site recently we need to make sure we’ve got them the way we want them before we port them over to the mobile apps.