I know that no one in there right mind would circulate a deck publicly while they were out pitching their company. However, it would seem that a deck from a successful round 5 or 10 years ago would be fairly safe to share. For instance, I think you could probably share Mint.com's deck from their original funding round (just as an example) without much damage to Mint/Intuit.
This would seem to be a huge win for entrepreneurs if we could look through pitch decks from companies that have received funding. Anyone know of any sources of these? I do recall seeing Mark Cuban's Broadcast decks from his IPO road shows and those were pretty helpful.
Any other suggestions?