Rated 4 out of 5 stars

for me - absolutely indispensable tool. i use it all the time. the only downside i can mention, is the fact that you're unable to choose other then english wikipedia. if there would be an option to choose other language wikipedia browsers add-on would be perfect - 6/6 points. or if you could run couple of language versions at one time. i'm hoping those changes will come. they'd be really appreciated by users. :)

Rated 5 out of 5 stars

Magnificent.

Rated 5 out of 5 stars

Wikipedia is a great resource for quick, accurate information. You won't be able to use it as a proper source for academic research, but it satisfies most of your curiosities. I don't understand why it's not a default search engine already.

Rated 4 out of 5 stars

Very usefull and complementary to Google

Rated 5 out of 5 stars

It's just working great. No problems at all.