Those profile lists aren't complete. For more discussion, see the Google Buzz list where, until the Buzz team released their own firehose, any of us who wanted

Those profile lists aren't complete. For more discussion, see the Google Buzz list where, until the Buzz team released their own firehose, any of us who wanted a firehose had to build our own. Also noteworthy, it's easier to just download and parse those XML files -- why use a search engine for that to begin with when it's already aggregated for you?