proxies for pr checking - usefull or dangeours

What is your advice on this option? Can it help? Is it dangerous? Will it slow down or speed up?

Of course It will help you get some high PR links. The problem is you will notice that your proxies get banned very fast. That's why I requested a feature to do pr checks with PUBLIC proxies only.
check it out here :
https://forum.gsa-online.de/discussion/1597/feature-request-use-only-public-proxies-in-pr-checking

ok. turned it off