Sarin wrote:

Harshel he knows how to do the Q&A. Bloo always places in the Q&A atleast when I actually look at the results I normally see his name. So he knows how to do it. The point of his post is that someone sent tons of junk to his account while he was doing Q&A and while trying to keep his inventory clean he fell out of first place.

It isn't just the matter of making sure you have space for rewards at the end.
Every sent item pops up two messages ("Person send X quantity Stuff" and "Obtain X quantity Stuff") in front of the questions, and they need to clear before you can click the answer.

All these messages, and the items as well, should be blocked during the activities.