[Seo Experts] best promoting products strategy?

Hi everybody
i want to know what's the best Im strategy For Seo And wich convert better

i'm confused
I promote affilate poducts in subdomains or Subdirectory Or each product in a unique domain??


And wich is better wordpress or Drupal(wich i'm planning to use) ?

If you want to boost your PR and SERP.. Go for Angela's backlinks..
This will definitely increase traffic and conversions !

Hope it helps !

Regards,
Vaibhav Jain

anyone?