I followed a link from this blog to a test for how well you know Russian. I got a somewhat disappointing (though perhaps not surprising, given how much I practice Russian these days) 3 out of 8.

The text that came up with my score suggests that I am probably an expat or a foreign worker. Touche!

"3 из 8 - вы практически не знаете элементарные правила русского языка, скорее всего, вы экспат или гастарбайтер. Может быть, вы закоренелый двоечник. Или просто вам с детства не даётся русский язык. Такое иногда бывает. Таких, как вы, в стране, согласно опросу ВЦИОМа, – 17%."

3 out of 8 - you practically don't know the elementary rules of Russian grammer, probably you are an expat or gastarbeiter. Perhaps you've always been a poor student, or haven't been around Russian since childhood. This happens sometimes. According to the VTsIOM study, 17% of the country is like you.

Я проверил свои знания русского языка и получил двойку. Сходи, проверься?