I need someone to find user's reviews & ratings of 50 major advertising networks. They should be informative and describe USER EXPERIENCE of these networks. Simple uninformative reviews such as "This is the best! 5 stars!" are not accepted. Also i need user's ratings and source URLs of reviews. Sample reviews: Quantity: minimum - 5, average - 10 of each item. Format: review - rating - url All information sources are accepted: forums, blogs, reviews sites etc. Networks list will be provided. PM me if you are interested.