RedBubble's forums (both the main forums and the group forums) are a handy resource but, sadly, they're not the easiest of things to keep track of — they don't provide a method of knowing when someone's responded to a thread you're interested in (the sort of thing that people might be used to when using phpBB-based forums).
They do, however, provide RSS feeds for threads. This is handy enough but, generally, I can't be bothered with adding subscriptions to my RSS reader of choice. I do, however, use Google reader for some bits so I got to thinking that it would be simple and handy to have a "add to Google reader" button right there in every thread.
So, because I'm lazy: here's a Greasemonkey script that adds just such a button to the help section you'll find towards the bottom of every thread. So, if you're a Firefox user, and you've installed Greasemonkey, and you're a RedBubble user, then install this:
redbubble-add-thread-to-google-reader.user.js
After you've installed it you should find the button appears in each thread page.
This RedBubble hack is brought to you by Dave Pearson.
Please note: This isn't associated with RedBubble. RedBubble don't endorse this, there's no connection. It's just a hack to make life a little easier.