I Like it! Rated 4 out of 5 stars
Very useful extension for old users of Opera like me, who just started with Firefox seriously :)
I would give it 5 stars if it offer an option to enable/disable the features it offers.
BTW, "click to current tab selects the previously selected tab", is something I haven't seen in Opera. Anyway if I want to turn this off I need to have the option to enable/disable this feature.
Also the extension conflicts with Tab Mix Plus or Tab Utilities when installed.