There are some bugs that need to be worked out, but the main functionality is there. What specifically are you having trouble with?
I'd like to answer for Kurt here...
The upload appears to be working/thinking, and then the upload/save screen comes up, but there is no file listed to save. I will say that I have had the problem for months, and thought that it was something that I was doing. Then, all of a sudden, last week, it worked. I must have tried for four hours straight, to upload a file with no luck. Then, poof! it worked.
I am leaving on another road trip today and hoped to be able to take a route with me, but now again, it's not behaving. I have tried in both IE 6 & 7 and Firefox. No luck.
Good luck with trying to figure out what is going on...