1. Do they offer a quality product?
2. Do they offer a relevant product?
3. Do they offer a unique product?
For the most part, I am a customer of these advertisers. Occasionally I choose an advertiser I have not done business with, but I would be willing to try.
Please let me know of your experience with these advertisers. If I receive any complaints, I will remove the offending advertiser from the site in order to maintain an excellent user experience!