My company just released a new site publicly for other networks/sites/etc to now utilize. We have been using it on our internal systems and some other systems for the past 2-3 months now. Currently it offers two services. First one is fraudulent e-mails. Basically you can implement the service within your system to block out temporary/disposable emails from being used. Second one is proxy IPs. For this service, it would determine on the fly whether the IP used is a proxy IP or not. If you have any other questions or want more information, please let me know. The website address is www.ProxStop.com.