You might also like a helper app I wrote at http://twitter.caboo.se which compares friend lists so you can find missing or new friends from shared acquaintances...
About BL Ochman B.L. Ochman, Managing Director of Emerging Media for Proof Integrated Communications, the digital marketing arm of Burson-Marsteller, has been helping Fortune 500 companies strategically incorporate new media into their marketing mix since 1996.