It does what it's supposed to do.

Adds the option to right-click. Neat, unobtrusive.

Отличное расширение для Mozilla Firefox: простое, с русским языком. Только то, что нужно, ничего лишнего.

Werbung - So bald man dieses Addon aktiviert wird jeder Sietenaufruf an screenscr.com geschickt. Sucht man z.B. auf der Google Bildersuche, so wird dann überhalb der Eregbnisse Werbung für entsprechende Angebote eingeblendet.

There are two other similar add-ons available on the Firefox extensions webpage, but "Search with Wikipedia" is the only one that is compatible with the Wikiwand add-on.

Done

Total fail. Don't download this rubbish.
The language option doesn't work, and that mean the whole add-on become usefulness, because you can't search in different languages.
For example I choose Russian in options, and then search some russian word but get result in a different chaotic strange language.