Model Mayhem
Self serving modelling site sign up is free
http://modelmayhem.com/
Net-Models
Internet Modeling site
Professional Photographer
Great photo magazine
http://www.professionalphotographer.co.uk
Purestorm
Internet modeling site and its free to sign up so go for it.
http://purestorm.com/search_models.aspx
Supermodel.com
Free to sign up model portfolio site.
http://www.supermodels.com/