What does RMB stand for ? Rated 5 out of 5 stars

Great add-on.
I see in this new version's features a RMB. Please explain what this stands for. Thanks

This review is for a previous version of the add-on (0.7.8). 

Right mouse button. Addon has plenty of functionality for LMB\RMB, please see https://bitbucket.org/ashemetov/selectionsk/wiki/FAQ#!what-the-deal-with-left-mouse-button-click-right-mouse-button-click

Rated 5 out of 5 stars

Works nicely -- The 'Google Translate and Dictionary' does not respond, perhaps because Google has abandoned its Dictionary direct-access page (hence, using Bing Translator which is fine). -- For saving to file option, would be nice to be able to add page url as well as date.
The concept is handy, and efficient.

This review is for a previous version of the add-on (0.4). 

Thank you for the good review.
Indeed, Google Dictionary is not available since 8/5/2011, as result addon's Google Translation is not working. Please use other translators available within addon (Bing, for instance) or download the latest beta from the support site where the issue already corrected.