Today I decided to change from normal VPS hosting with multiple dedi IP to multiple C class and I placed to request to my provider. He called me up just now and told me its a myth and promoted by few web hosting provider to get some extra bucks. Though he is ready to provide it with some additional cost ($4 per IP), but he advised me to stick up with dedi IP. googled it and found mix of review. Though some agree and call it BH tips while few totally disagree from their exp. What the expert guys here thinks. Specially those who has tried both.