...just seen this good piece of info from freeforums -
We appreciate that you have chosen FreeForums.org to host your forum, and we would like to let you know of some important changes coming up:
Effective on 3/23/2011 we will implement in-text advertising shown only to guests/non-logged in members across our network. These will never be shown to users who are logged in. Our users have made it clear they prefer a stable, ad-supported service over a host with a lot of downtime and issues, and we have taken that into consideration when making this decision. FreeForums.org has invested heavily in both manpower and infrastructure to ensure we continue providing the level of service our users have come to love. These new ad units will allow us to continue making investments in servers, features, and everything else needed to keep your forum strong for years to come. Below are a few points to keep in mind regarding these changes:
In-text ads are not intrusive like popup ads, or full page ads that other services may have.
Once a user registers or logs in, these ads will be gone forever. This will encourage more users to register and thus increase the activity of your forum