http://www.nellyfurtado.com - The one and only, official site.
http://www.imlikeabird.com/ - Very nice site with lots of multimedia and info
http://nelly.weblogs.com/ - Unofficial message board, a place to share your opinions!
http://springolo.com/nelly/lyrics.html - Lyrics to most of Nelly's songs
http://www.oocities.org/nellyfurtado_es/ - The Nelly Furtado Mexican Fansite
http://www.burninthespotlight.com - Burn in the Spotlight Fansite
http://www.ukbritney.tv/nellyfurtado/ - Another official site

Other / related links

http://www.cdnow.com - Nothing new, but you will find Nelly's cds here for sure!
http://www.oocities.org/smrsek - My website, dedicated to a funk group Jamiroquai