If you don’t do that you can stuck with something like this (unfortunately only people from Ex Yugoslavia can understand this one but still it’s a big LOL :

Hello,
attached we send you a contract on business saradnji.Molimo g apotpišete you to verify and return back to us by mail at this address

Fortunately, the client did understand what he want to say.

But what about google translate?  I try to translate this sentence from English to Croatian: “Fortunately, the client did understand what he want to say” (Srećom, klijent je razumio šta je on želio reći) and  what GTranslate gave me is: “Srećom, klijent nije razumio što on želi reći” (it translate to something opposite to what I want to say).

So I try one more time to use result of translation as input to translate  from Croatian to English: “Srećom, klijent nije razumio što on želi reći” and now, I get right translation: “Fortunately, the client did not understand what he wants to say”.

The question is: How can you trust to the service like this and do you ever get some strange results?