Anyone who ever told you google image search traffic is worth a damn completely and utterly lied to you. I have a blog that has been getting over 300 visitors a day for like the last 4 months and have affiliate links and a big ass popup that appears on every page. Till this day, i have yet to make even 1 sale, and the offer from the links and popup is highly related to the blog. The bottom line is, people want just the images they searched for on google, and that is all, nothing else. Anyone who tells you this type of traffic will convert into actual sales also has a bridge to sell you for just $99. Im done ranting.