I think you are talking of indexing ur forum if yes, you need few good backlinks and your site would be indexed quickly.
No ads wont help you get ur site indexed, you actually need inbound links to your site that is other good sites linking to your site.
You need the following: Backlinks Indexed pages How to gain them? Submit to directories with PR,etc. Do link exchange.
X_x i dont understand how i do that ??? EDIT: i try to submit my forum for free in submitexpress.com and then what should i do???
Goto directory section of the forum and you would have some idea what to do. Do visit this forum it will help you understand. http://forums.digitalpoint.com/forumdisplay.php?f=25
This is list of directories, select free ones if you dont want to pay for submissions and submit your site to as many as possible for you. http://www.seocompany.ca/directory/top-web-directories.html there are other lists with many directories will try to find one for you or try yourself at Search engines "List of free directories" etc. and you will find more free directories.
What SE's love is fresh content updated on frequent basis.Forums can be treated as daily snippets of information updated frequently.Try to interact in the "internet's hot topic" forums on a frequent basis,and attract participants by using intersting title.
i tried and nothing....... could you do it for me please every directory ask me to pay and the free ones tells me that is already in directories and that and no i dont know what to do this is my forum: http://goldensunnation.myfreeforum.org
You can also write articles and submit them to the free article directories in an effort to create backlinks (by including a link to your site in the Resource Box). Do a search for "free article directories" and you'll come up with lots of them. HTH, Sam