I read a DIY blog in early 2010, it may have been:
http://blog.zorinaq.com/?e=42 But I can't be sure.
I saw the $500 price tag for each 5970 and said there's no way I afford that! It wasn't until the Summer/Fall of 2011 that I actually did my research and saw that I could mine with less expensive cards.
I went on a CL hunt and found 2 5850's that I put into service.
I mined 2 BTC in 2 weeks and my wife was asking why it was so hot and loud and on ALL the time. Price dipped and I shut it down for peace in the household. I understood how to mine for bitcoin, but I didn't delve deeper into the whole network and concept of bitcoin.
Fast forward to April 2013 when I decided to sell my 2 5850's and get a "new" card for gaming. My 5850's sold in less than a few hours and I wondered what the big deal was. Ever since then I have been using, mining, reading, learning about bitcoin; all the while trying to purge the myths of bitcoin.