1. They'll make sure you don't get to the end of your probation. 2. A QA has too many demands placed on them; even if they are met, they will not be able to survive. Reread the first sentence. 3. It is acceptable if you are joining the company as a developer, but it is not a good location for a tester. 4. I have observed many people who were on probation being fired by Adtraction during my time there including developers, tester and managers.