Customize Any Web Page
Let me tell ya, this FireFox plugin has made browsing some local sites much easier.
Rip (Remove it Permanently) provides the ability to point at and remove permanently any item you can select. It provide a flexible and easily configurable solution to removing unwanted content from a web page.
Here's my rip for the Bulletin and for Bend.com (updated both of those on 5/26). You'll need to import those into the RIP plugin options screen.
If it is just image based ad's removal you are looking for I suggest you use the rather excellent (Ad Block) extension and download a good list of regular expression for this extension.
If on the other hand you want the power to choose what content you want removed, be it unwanted forms, text based ads or just areas of a page (or website) you don't want to see anymore, RIP is for you.