Hi guys — I recently upgraded the site software, and found that the upgrade had “broken” the aggregator functionality you are talking about.
So I just decided to remove it, for two reasons. One, it didn’t work. 🙂 But also, two: at this point, this functionality is entirely redundant with that of RSS readers, which allow users to customize their own content aggregators very easily.
So if you are missing that feature, you might check out an RSS reader such as feedly.com (there are many, but that’s the one I use). It’s super easy to put together your own content aggregator lists, exactly customized to your own preferences… I check my feedly.com lists several times per day!
If it helps, I can provide a list of the blogs that I had in there, to help you seed your own RSS feed.