Rodent Regatta

This news aggregator isn’t entirely clear to me. First, why does the Wall Street Journal insist on making 100% of the entry in the aggregator a link? That’s not the way I want to post.
Second, why did my news aggregator just show me news items all the way back to 10:00a.m. this morning? I’ve browsed it since then and deleted things I wasn’t posting. In some cases I had several repeated news items for other webloggers; e.g. Scripting News and Doc Searls. Where’s the best place to read about this and understand how it works and how my supposed hourly updates are really working?