hello i have just recently created a forum. but i dont know if it has good SEO how do i find this out?
Most forums suck for SEO. That just seems to be the way of life for the time being. You should start a blog and point to the important forum threads often.
When it comes to forums, having threads filled with good content and using correct and relevant titles will be helpful. Keep posting, talking on those forums, eventually you will get spidered and with luck you'll start to pick up important keywords. A blog helps since you can post about important threads, which further helps the indexing of your forums.
if this is your money making forum in the signature, then i dont understant why you are directing each of your forum categoties and all other content to a different domain and opening in the frame under the same domain. very poor practice and not credible at all. URLs that you are redirecting are not seo friendly either