Has anyone used these services and if so can you give me some feedback? We operate a Social Network that offers an affiliate business opportunity on the monthly memberships. We are thinking about launching a small online campaign and considering the following services: MyLikes, Sponsored Tweets, Social Spark or Ad.ly. The main objective is to increase our Free & Paid memberships ? has anyone used the noted sites? If you have, did you accomplish your campaign objectives? Does anyone have any other suggestions for campaigns other than the noted sites? Thanks in advance for any feedback!