It's the automated aggregator part of the site, i.e., it scoops up new headlines and links from local blogs (if you're curious, click on Boston Feeds above). If you are using it, please let me know, either in a comment or via e-mail.
The reason I ask is I *think* it's responsible for the wicked slow performance on Universal Hub over the past few days; it doesn't seem designed to handle large numbers of feeds (it's past 350 of 'em now). So I'm thinking of taking it down for awhile to see what happens. If nothing happens, then I look for some other problem; but if that does cure things, then I'd have to consider pulling it down for good (in which case I'd post a Boston OPML file you could import into your own personal aggregator).