To add Adsense to your default search dropdown see here
http://www.forumtools.net/t100-add-...r-dropdown.html
Adsense Terms of service
It is very important to understand and comply with the
Terms of Service provided by Adsense. Failure to comply can and most likely will result in the termination of your Adsense account. A quick search for
banned by adsense at the time of writing this article renders 492,000 results which is pretty self explanitory.
Other major advertising companies
With the exception of Fastclick and BudsInc all of the sites below make no mention of NOT placing ads on forums. However, most require that their ads are placed
above the fold. Contextual advertisers such as YPN and Adsense explicitly say that their text ads cannot be combined on the same pages.
Casale
http://casalemedia.com/31539.html
Budsinc
http://www.budsinc.com/content.htm
Fastclick
http://www.fastclick.com/publishers/agreement.html
Burstmedia
http://www.burstmedia.com/release/j...ibility_req.htm
YPN
https://publisher.yahoo.com/legal/prog_policy.php
Chitika
https://chitika.com/mm_terms.php?application=true
Tribal Fusion
http://www.tribalfusion.com/SmartPu...s/contract.html
Getting accepted into the majors with a forum site
This is not always an easy task, certain advertisers such as YPN and Adsense rarely deny a site and their TOS is fairly forgiving, allowing the publisher to place their ads where ever they want. Getting into one of the other sites listed above is a not nearly as easy.
One of the reasons for this is that forum sites have a lot of sporradic impressions that are not easy for the publisher to track or target, especially on a dynamic site. This is one of the reasons so many forum sites get denied or get their accounts terminated.
Setup a static and informative home page
When a publisher views your site, they are looking for static content related to your site and target audience. Just sending them a link to your forum will mostly likely result in a generic letter of denial.
Setting up a portal or a static (html) home page for your site will do wonders. Try to be as informative as possible while keeping in context with what your site is all about. Articles that are listed on the front page can be helpful as well, even if it's just grabbing a post from somewhere on the site and publishing it.
Publishing ads on new forums
Before a forum site is able to generate revenue it is best that it's populated with both users and posts. Placing ads when starting an unpopulated forum gives the appearance that the site is only there to make money and can potentially turn users off to the site.
A new sensation that is becoming quite popular is
paying for posts and registrations to boost a new site. Most of these places will charge a reasonable amount to register users and create posts that are relevant to your site. This may be a good avenue for those who don't want to pour a lot of money into advertising.
With the exception of YPN and Adsense, most publishers require several thousand unique impressions per month before a site will be considered.
Cheating the search engines
Trying to trick search engines is probably the worst thing for a site. Although it may go unnoticed for a little while, eventually the site will either get caught and thrown into google's
sandbox or have your Adsense account terminated and banned.
Things to consider;
cloaking and
keyword stuffing will usually get sniffed out by the search engines which in turn will severely hurt the site's placement and page rank. Though they are easy to implement and tempting, it can only serve to harm the site in the long run. Search engines have become very smart and can easily detect this.
Doing the right thing
By setting up a well SEO'd, easy to navigate site with interesting and targeted content, your site get noticed over time. Members will spread the word and backlinks will get around improving your page rank.