Lately I have been worrying about the quality of the questions here, and it occurs to me that it might help to restrict the number of questions that a user can ask per day and per week. Some user(s) seem(s) to ask whatever goes through their head at the moment.
I should add that there are SE sites which have such restrictions. Also, it seems that I forgot to mention that I would appreciate it if you left an answer or comment if you have an opinion on this.