You may have noticed in the bottom right corner in the sidebar, we have advertisements. These advertisements look like this:
These advertisements are not sponsored, and are there to fill up space. If you'd like to advertise your site on that banner area, you are able to for free! To register for you free ad, go to the Report tab. Then do problem category other, make the problem advertise, and in problem link add the image url, and then in the description write about what the banner should say and the url to go to. If we approve of your ad, we will add it for free!