Good idea, but needs improvement Rated 3 out of 5 stars
I've been using this add-on for a couple months now. Overall it's convenient, but it could easily be better.
1) For some strange reason, the author has decided to prompt an error dialog box when the add-on detects that the text you have highlighted doesn't look like an address enough. Why not just send the query to Google Maps and let it deal with it? instead of preventing the search altogether... I'm the user, let me decide what I want to search with Google Maps, don't impose criteria on me, please. This renders the add-on useless in many instances.
2) Instead of "Map with Google" in the context menu, I would suggest "Google Map it." My mind knows it's looking for Google Maps, so it takes a little bit more time and effort to scan for another text string.