I gave this a good review anyway. How is this different than typing this into search such as Mario site:reddit.com ?

Also for forums you can adding whateverforum.com/subforum.

OK i Tried this briefly. You can make a search plugin and add site searches using google for any website. Then right click text and select the search engine. easier with classical search bar. Just put the icon between the search bar and address bar.

Another neat function you can do manually is typing filetype:mpg OR filetype:avi OR filetype:mp4 OR filetype:wmv to search video file types. just add a capital or and make it a search plugin. Then if you search for specific videos you will get links to videos. works with documents and all kinds of filetypes.

Great addon!

Would be even better if you could add startpage.com, a privacy friendly search engine that uses google.

needs the simple ability to change search engine on the fly, instead of hiding it in options.
also would be nice to have it understand search engines already added into firefox.