Hey there!

Sorry to hear that I'm not explaining how to add engines very well. :(

SSS only includes a few search engines as (working) examples. You can import all search engines you use in your browser, for example, and then you can even add custom engines. Everything is explained under the instructions section of the add-on's options page. If you feel confused after reading those, please feel free to contact me at daniel.rb.lobo+sss@gmail.com and I'll try to understand the problem and explain as best as I can. :)

I can't add your browser engines automatically without user intervention because of browser limitations, and I don't add more than the basic 4 because then people would start asking for many many many engines that are not present, when they really should add those that they use. :)

I hope this makes sense!

All the best,
Daniel