Some people are afraid of writing texts in foreign languages. Some people write very difficult texts with long sentences and make a lot of mistakes.
The problems can be also by verifying such texts in the Open Exchange Request because some native speakers in my opinion often overchecked the texts of the foreigners too faultfindingly, too captiously - and by that they discouraged the most of students in making new efforts in writing or at least they don't contribute to it.
I've written about it a little article.
Here is the link to the English version:
http://www.lingq.com/learn/en/store/119506/4203...

And here is the link to the Russian version:
http://www.lingq.com/learn/ru/store/71918/41105...