Rated 4 out of 5 stars

It would be great if this extension had an option to actually emulate the middle click. This would allow extensions like Redirect Remover and MClickFocusTab to function properly when right clicking a link.

This review is for a previous version of the add-on (0.3.6.3). 

All extensions works in one "level". So all of them will receive both events: real right-click and emulated middle-click.
If Right Links tries prevent right-click event, another extensions should check event.defaultPrevented (https://developer.mozilla.org/en/DOM/event.defaultPrevented), but the order of event listeners calling is "random".

Additionally Redirect Remover should works like Redirector extension (https://addons.mozilla.org/firefox/addon/redirector/): handle internal links opening, not clicks or other user actions.

In the next Right Links version will be added "long" left-click feature, it's a bit similar to MClickFocusTab.