is it moonbattery to think they might use this thing to profile my emails in the not too distant future?
Yes. Profiling emails won’t require a supercomputer.
Yes it is, they'll use your computer, and your ISP’s servers for all that work. They'll just require the report.
http://news.cnet.com/8301-10787_3-9945710-60.html?part=rss&subj=news&tag=2547-1_3-0-5
There was a recent article that basically stated that an industrious venture capitalist could profile you and do carefully targeted marketing, depending on your web habits, and this might a ubiquitous process in the future...