I’m swiping this directly from Allen but he is very correct in reminding researchers than without dated research notes you may be undermining your ability to receive patents. With so many of us keeping our records electronically, Stamper, a free PGP Digital Timestamping service, is a very useful resource. Thanks for finding this, Allen!
Glimpses of the websurfing habits of a computer science professor, obsessive crafter, occasional gamer, and all around geek