Cred ca la asta se refera Sorindsd.

Cu Nofollow pe link-urile interne s-ar pierde din calitatea PR-ului.

Totusi, daca folositi Nofollow pe pagini, incercati sa il folositi pentru Crawl prioritization si nu pentru Page Rank Sculpting, care e o prostie. Nofollow nu se pune doar pentru PR ci si pentru a prioritiza crawlingul pe site.

Crawl prioritization: Search engine robots can't sign in or register as a member on your forum, so there's no reason to invite Googlebot to follow "register here" or "sign in" links. Using nofollow on these links enables Googlebot to crawl other pages you'd prefer to see in Google's index. However, a solid information architecture — intuitive navigation, user- and search-engine-friendly URLs, and so on — is likely to be a far more productive use of resources than focusing on crawl prioritization via nofollowed links.