I did it yesterday a whole bunch of times, and tried it every which way possible. I could not get it either. I read on a blog about it (in the comments) that it can sometimes just take a long time and you have to come back to it later because the network gets overloaded or something. ??? I don't know. Hopefully they will get it developed a little more fully. I really want to be using it too! (I also had the tags without #'s just as FYI for anyone wondering.)