We already do this for answers.
We now have some basic heuristics in place to check for the short answer, and the short “thank you” answer. If the answer is by a new user and matches enough of the heuristics, we provide automatic guidance — as originally suggested on meta by Kop — in the form of a How to Answer page .
But, don't take my word for it. I STRONGLY recommend that you fire up Google Chrome in Incognito Mode and try posting this as an answer on Stack Overflow. Right now. On the live production website. No, I'm not kidding -- try it. G'wan. Go. Do it. Seriously, do it!
Here's what I want you to post as a new user "answering" a question. And remember you must be in Google Chrome Incognito (aka new user) mode:
i have the same problem!!! can anyone help?
Not enough? How about some visual proof; I'll do it for you. Here's me entering this as a new user ..
Here's what happens after I click Post Your Answer; I am required to read and agree with the How to Answer page.
So, as you can see -- this already works for answers.
This setting is fairly safe, since it's triggered by a heuristic on answers -- we have a pretty high confidence level that when this heuristic is triggered, the odds of the answer being a bad one is high. To get an idea of what things trigger the heuristic, click on the "low quality posts" tab on the review section:
The heuristic value is indicated at the bottom left of each post. Lower is worse, higher is better.
This answer quality heuristic check is currently enabled on all our "large" sites like Super User, Server Fault, Programmers, Ask Ubuntu, etc.
After reaching some threshold, an account may be blocked from answering, showing "Sorry, we are no longer accepting answers from this account".