Which are these Web sites ? Depend the actresses, but generally I see without order:
http://www.excaliburfilms.com
http://www.adultdvdempire.com (affiliate with DW)
http://www.adultvideouniverse.com (affiliate with DW)

After if I want more search and perhaps find other stuff I visit european website without order:
http://www.xodvds.com (affiliate with DW)
http://www.blissbox.com
http://www.xonair.com
And some other but not really important !!

After that If I have doubt about movies, I see in reviews websites:
http://www.searchextreme.com
http://www.adultdvdtalk.com

And dataBase:
http://www.egafd.com
http://www.iafd.com
http://www.adultfilmdatabase.com
http://www.imdb.com

and finally, yeah google you always find something for confirm information
http://www.google.com

The problem for all websites Reseller, Reviews, database, you can never find a complete or really up to date information !!
Some of this website make many mistake too ! And perhaps if you follow this information you can engage you in bad surprise !
That's why I open Dreamingwith and I try give you a quality working and make for you the best resume about what you can find in all this websites !!!
Oohhh, why imdb at last :] Yeah since the debut I see porn filmography in this website I find always some mistake inside and we can't trust about this website !
I think imdb must stay in classic actors, really !!