One of the tasks in the Welcome Aboard! Mission is to create an idea in Oracle Community Ideas space, as well as liking comments and rating documents and posts. I do not believe that creating an idea and judging people's posts is necessarily such a good idea in anticipation of completing a mission to score 500 points.
I also wonder why follow another user by sending a Friend request is is part of that mission. It's not a big deal, but I have received several Friend requests from people with no posting history and the Welcome Aboard mission might be the reason.