I have a very hard time with Online Lead Providers. I spoke with a president of a lead provider at a recent seminar. He said that they are paying advertisers a lot of money when people click on ads. Therefore, a good hand full (Especially new lead providers) will recycle the leads 2-3 times (so they can make up their ad costs.) I would recommend going to Compete.com to see some validity of some lead companies. You basically type in the lead companies URL and it shows traffic consistency. If they have high consistent traffic, they are most likely a good company. Use Netquote as a reference site. Then compare everything else off that.