They got rid of that feature and now you're forced to browse everything (including the stuff you don't care about). Either that or you check each of your communities one by one - with plenty of overlaps (stuff belonging to multiple communities).
I gotta say, this made me stop browsing this site a lot. Now I just check 2 communities max. It's obnoxious, but at least it has saved me from a lot of impulse buys. LOL
I wonder what kind of thought process they went through to decide implementing a feature that would drive people away from browsing the site. Giving people the option to either tediously check each of their points of interest one by one or be inundated with things they don't care about is the worst way to drive traffic. And here I thought we're living in a time when companies are doing their best to catch eyeballs and come up with ingenious ways to make smarter recommendations.