"Any Word, Click, Get Information!"
I don't know if you remember this, but during the Dot Com boom, there was a TV commercial showing a motivational speaker woman on stage telling the audience, "Take any word, click, get information!"
I forgot what the product or the company was. But I just found out that the latest Mozilla can do pretty much the same: If you right click on a selected word or phrase, Mozilla will show a context menu item 'Web Search for "selected word"', which will do a search for the word on the configured search engine (Google for me).
Another one of those conveniences brought to you by the Mozilla team.