You can create a free blog with blogger and post affiliate links to a widget (what I've done). Connect blogger to Twitter. Then you can write blog posts; people visit your page, see the coupon links and there you go;)
I dont. If I find a deal that is beneficial to those in my circle of friends I will give them a heads up with a direct link to the product itself and tell them how to get the deal but I dont link to my money makers link or to the links here.
Thanks for the idea of blogs.....I had been kicking around that idea..so I may try it. I also found a forum at: dodsea(dot)com/forum that allows affiliate links (thought I'd share :) - If anyone finds more sites.....please share.