Diagnostics for Adblock Plus
Note: The extension Diagnostics for Adblock Plus will be useless for most people. It is a diagnostic utility meant mostly for investigating Adblock Plus related issues.
Diagnostics window can be opened by pressing Ctrl+Shift+M or by selecting "Monitor Adblock Plus actions" from Adblock Plus menu. It will show all load requests that Adblock Plus receives (also the ones that don't make it into the list of blockable items), display some additional information on those as well as the answer Adblock Plus returns — block or allow.