Roll Your Own RSS Aggregator

Saw this posted on Digg. Its an article from IBM (with code) on how to roll your own RSS Aggregator in PHP. Obviously this could be of use in developing custom tool-sets for automatic content creation. Probably more applicable for the CS crowd. Anyways, here you go

http://www.ibm.com/developerworks/library/wa-aj-rssphp/index.html?S_TACT=105AGX44&S_CMP=EDU