WordPress Blogs Feed v0.8b copy

Many into One; Various Wordpress - Problematic: Various feeds have vastly different publication rates. Some (eg.: reddit and Digg) may emit a huge number in a 12 hour period while others (e.g. "Portals and KM") might not have any on a particular day. I want to capture the recent from each feed. So? Given that a full feed breaks FeedBurner's size limit (I take that as diagnostic) that means I have no choice but to throttle quantity. I'm aiming at a max of 4 from any (with 15 feeds that's more than plenty!) while capturing at least 1 from the most tardy. Addend: 4 posts from each of three blogs, sorted by pubDate and truncated at 10, to have 4 from each of the most recent and at least 2 from the older.