Не понял, как создавать категории поисков?
Удобно когда поиски можно группировать и искать сразу во всех магазинах или только в поисковиках, например.

Нет возможно выборочного поиска на нескольких сайтах одновременно. Фигня!

Quite good add-on. It needs some initial configuration (basically, exclude unwanted engines, add some others et.c.), after which it works well.
PS. `Google Translate` settings seems to be broken, easily fixable though.

Edit (2022-02-04) It'd be interesting (I would say necessary for keep using this addon) to have a response/explanation on that (valid) objection: https://addons.mozilla.org/en-US/firefox/addon/contextual-search/reviews/1798721/

Good addon, but keeps on installing crappy search engines I've already deleted. STOP IT!