Oh boy, finally! I've been looking for a Twitter Favorites-manager for a long, long time. Glad finally someone is addressing the problem.
The overall usability is a bit weird (but based on your poll I wasn't the only one - 85% also said the same :)) but hey, it's already 10x better than any other alternative.
Hope you guys continue to develop the product and find creative ways to make a business out of it.