Wow. Carl Franklin Finally posts about something other than .Net rocks, and starts with a bang. He extracted the DPAPI(Data protection API - for encryption) helper class that was given ant MS DevDays 2004 as part of the IssueVision sample (which apparently MS Israel has not heard of yet!) and put it into a helper DLL of encrypting and decrypting strings easily. very cool.
He also linked to Matt's helper DLL for .Net, which includes many cool stuff that may come in real handy at lots of situations. Couple this with a great comment to that post which includes 2 more useful links, and you can start seeing the power of weblogs: