Hi,
I have recoded the idea backlog in more modern technologies.
It replaces the old one, same address:
At the moment the mechanics is the same : you have unlimited votes to cast, one per idea.
The categories are replaced by tags, and you can filter the list by a tag or by a search term.
One new thing, apart the look and feel, is that you can unvote an idea that you voted on earlier. (You still cannot downvote ideas, I want to keep this in the spirit of a brainstorming).
I have reset the vote counters. (Some votes had been cast by web indexing robots). I'm sure the same stuff will bubble up in a few weeks of time. (I have the old values backed up on my machine anyway, I know the popular demands 
).
I tested quickly on Chrome, Firefox, IE9, IE8 and IE7. Please report any bug I have missed in this thread.
I seriously considered switching to a third party solution like UserVoice or GetSatisfaction. In the end I wanted simplicity and grouping by tags. Maybe next time. It also helped me sharpen my web programming before trying to write a viewer/editor for custom tools 