Is anybody here using ultradns.com ?
 

I was just contacted by a sales-guy from ultradns.com, telling me that I could increase my traffic by 10-12%, when I use their service. I never heard about them before and I'm not sure how they want to increase my traffic by changing the dns-servers.

theres a big thread about this same topic not so long ago

general consensus was not to use them

Thanks, gonna search that thread.
They claim to do the the dns from amazon.com... :helpme