This is a somewhat large feature, but i figured i would suggest it.
Perhaps the system could automatically save a pdf of the page linked on the deal, and store it for later on if issues arose from the stores changing the T&Cs. There have been a few deals (such as the WD promo, or Dell "bait and switch" deals) where having a timestamped screenshot of the page when it was created would have provided excellent evidence to fair trading/complaints department etc etc.
It could also only be done where a deal gets over 50 votes. That would save space on the server
If storing pdfs on the server is out of the question, i'd suggest a "email me" button which would automatically email the user a pdf of the page, and the ozbargain original post (with url linkback)
just an idea anyway
You could always write your own script, using Yahoo Pipes or IFFT to download each file for each deal.
http://www.ozbargain.com.au/goto/94707. Just iterate this link +1.
Probably just IFFT front page RSS feed —> save link to Google Drive or Dropbox?