I haven't used this app yet, but the review on TechCrunch looks very promising. I signed up for the beta on their website, and expect (hope?) to hear back from them soon.
Other than the name (which I truly dislike), this looks to be a very valuable product. I would gladly embrace the concept of tagging any object (be it email, file, calendar entry, etc.) I kind of do something similar with categories in Outlook (for mail, contact, and calendar items).
I believe the real win here is to take a product like Tag2Find and have it utilize the native containers as opposed to keeping all the metadata in a separate db. There are inherit pros and cons to this, but overall I like the concept of storing my tags in the keywords field of my Word document - not to mention products like Windows Search and Google Desktop could index off it as well. For all I know, this thing does this now. Until they email me an invite, I can only guess.. (hint, hint)
