Occasionally I spot a few really lazy questions in a row from a particular user, which prompts me to look at their profile to investigate if they deserve to have a lazy question answered.
If my investigation shows the user posts a lot of "plz-send-me-the-codez" questions, I'd like a lightweight way to share the results of that investigation with other users.
I suggest a flag to encourage a user to write better questions. If enough people (of a sufficient rep) agree with the flag then, for the next month the site could:
Give the user a 'nudge' to post good questions, e.g. giving them a popup when posting a question to remind them how to post a good question (with a link to the FAQ).
Display a small warning on all that user's questions, e.g. "some users think this person needs to improve their questions".
Sometimes very short or lazy questions can end up being very popular and useful, but it would be nice to be able to nudge the poster to make more effort if they are a consistent offender.
Some users have definitely provided a great service to Stackoverflow as many of their questions have brought good answers, and a large number of views to the questions. However, some also ask a lot of repetitive and lazy "plz-send-me-the-codez" questions.