BumpTop is a fun and useful Windows download that we covered when it was only a concept. It’s now available in two versions, free and Pro ($29). It gets you closer to using your desktop like you use a real desk. You can group and pile documents and folders, hang photos and stickies on the wall, and tweet easily without opening a web browser or application. It even supports multi-touch if you have the hardware and Windows 7 to support it. Brief 546 is a demo of BumpTop, which you can download here.   You can save money on domain name registrations and renewals from GoDaddy.com with discount codes GB1, GB2 and GB3. For an explanation of each code, click here.