I've been using this program since it came out, and i love it. The interface was a bit strange at first but i've come to love it.
It has some quirks: i don't like that it upload every pick on my device at first run. This is kinda the same problem as with pc suite. It doesn't see difference between photos taken on the phone and downloaded. But that is about the only negative thing i have to say.
Luckly the latest version of this program has fixed some of the qirks I pointed out.
One of the things I've come to love with the IMEX is the public timeline flow of images where you can see snapshots made by other users instantly and comment on them somewhat one of the things that made flickr a success on the web so now I wonder why this truly unique program has not been upgraded to a beta app.. Nokia has a winner here with a lot of sticky feature that could create some buzz, right :)