Double click a word to highlight all occurances. Double clicking another word will highlight the new words.
Just double click to highlight the places that word occurs.
build a way to disable the extension on sites that you select (maybe because you don't want or because you found it won't work);
bugfix v1.0.1 - won't search when highlighting words in a textbox.
updates v1.0.2 - add link to search google since the word is no longer highlighted.