Meanwhile here are the figures so far:
Uniques: Unique visitors not returning in 30 days.
Visits: All visitors.
Widgets: Widgets served.
These figures exclude bots.
The bandwidth cost has also gone up significantly. Back in January it was 12MBs, but not only are more widgets being served, but complex ones like the e-reader and store (which are becoming more popular) use more bandwidth. For the moment, we are covering the extra by adding Project Wonderful ads to the site.
In terms of widget progress, we now have animation support installed. It will take time to develop widgets that use it, but animated banners and buttons are in the works. If there is something you would like to see let us know.