Iphone app - yay!

The Blip iphone app is back. Yay!

I think this blip is going to post. But havent a clue how to add comments to someone elses blip?! Don't know what to click on to make the comments box pop up? Nor do we know how to connect to FB because its saying we're already linked to FB but the little green button thing keeps popping up with a message saying we have to link our account?????

Help?!