Speaking of SiteDelta Watch,

1. SiteDelta Watch will not do anything if you visit the page itself - only if you use the Watch icon, or open it from the Watch Sidebar (i.e. if you are on the 'moz-extension:' page)

2. The page content you see on the 'moz-extension:' page is what SiteDelta Watch sees when performing its background scan (except for pages that hide content using CSS - I know that is a problem that will be addressed in a later version). So if this page does not contain what you want to monitor, SiteDelta Watch will likely fail to notify you about changes.


However, if you do not need scheduled background scans, SiteDelta Highlight might be your better option:

1. SiteDelta Highlight allows you to decide when you want to highlight changes.

2./3. SiteDelta Highlight works on the page itself (similar to SiteDelta), an not a 'moz-extension:' version with JavaScript disabled

HOWEVER, SiteDelta Highlight cannot perform (scheduled) checks in the background, but has to load the page in a (visible) tab and check it there.