does sub forum on site effect on google PR & inex pages alot said that does that true my site havent any sub forum http://www.paramegsoft.com and another sites which have sub forum google indexed alot of pages to this site any one have any idea
Google indexes alot of pages on sites with forums because there are constant updates of content and googlebot likes that and comes more often, which leads to deeper indexing. Frequently updated forum anywhere on your site will get better indexing but it wont affect the PR in a direct way.
It generates lot's of extra pages for you website and if all of these pages are linking back to your home page or all of your pages then it could help to increse PR, there are many other more important benefits from setting up a forum on your domain though!
Sub forum affects to PR and inex pages. Yoy should do good SEO, if you don't have any sub pages. Good SEO helps you to increase your site ranking.