I have a question regarding your ad server. I clicked on an ad here that promised a 12% discount sale and when I went to put in the code for the discount at their website, it wasn't valid. After I called the company, they said the sale had expired. So, what can be done to ensure the ads here on SI, promising discount sales, are up to date when responding to them? Makes me less inclined to respond to ads here in the future. I realize you're not responsible for ad content, but thought I'd bring it to your attention.