I have just followed the link from your email domain and it does appear you are using free hosting that injects ads into the page.
The text you are seeing in the WYSIWYG Editor is the result of the ad that the host is injecting into the page, which in this case is the WYSIWYG Editor.
The WYSIWYG Editor is not compatible with free web hosts that inject ads into web pages and so would need to be disabled for your forum.
Alternatively have a look at our own Free Web Wiz Forums hosting that supports all features of Web Wiz Forums including file/image uploads, SEO URL Rewriting, email notifications, and more:-
http://www.webwiz.net/webwizforums/webwizforums_hosting_services.asp