Why do pornstars have so many IDs or not using their real names?

[eGrodin]

Why do pornstars have so many IDs or not using their real names? Sometimes you may wonder if they work for the CIA though we see the photos and most use one particular name just to get more pictures or gallery of her.

Tiffany Diamond, Blondie, Tiffany, Andrea H., Andrea, Andi, Violet, Tiffany Rose, Tiffany B., Morgan(!), Jennifer

Alexa May, Alekssandra, Alex May, Alexa Mai, Alexa Mei, Alexandra Blake, Alexandra, Alexandria, Alexia May, Chimerey Sandra, Eva, Sophie

Sandra Shine, Judit, Judith, Judith Divine, Judit Dios, Judy, Toni

Zuzana Drabinova, Eva D., Raylene Richards, Zanette, Zuzana, Zuzana D., Daniela

Sophie Moone, Sophie Moon, Sophie Moone, Sophie Sweet, Sasha Saint, Reni, Renata, Rene, Sophia, Stella, Sandy, Sophie Moore, Sofie. Real Name: Renáta Somossy

Veronica Carso, Donita, Sophie Angel, Sophie, Veronica B., Veronica Castro(!), Veronica Rinaldi, Veronika Carso, Veronika

There have been two models under the brainless name “Pochahontas”
Artistnames like “Angel”, “Angelina”, “Britney”, “Alex”, even "Paris" seems popular.