I noticed many sites has such redirect:
when you type e.g. nfstuning.com, server instantly redirects you to www.nfstuning.com

Is it worth having this feature on my site? I've heard many people saying that it has some good influence to PR.

nfstuning.com is PR1 and www.nfstuning.com is PR5. Should I have a 301 redirect on nfstuning.com? :)

Originally posted by kelmas
nfstuning.com is PR1 and www.nfstuning.com is PR5. Should I have a 301 redirect on nfstuning.com? :)

Yes.