For a background of the problem, see this other question.
This feature proposal is reduce posting of "linking hit-and-runs" answers.
An answer is a "linking hit-and-run" if links occupy >= 15% of the body and the character count if lower or equal to 200.
If an answer is qualified as a "linking hit-and-run", one of the following actions could be implemented:
Warning Only: Warn the user that his answer is a "linking hit-and-run" and considered bad etiquette on this website to post that kind of answer and that posting such answer might incur negative reputation for that very reason.
Warning and CW: Warn the user that his answer is a "linking hit-and-run" and that it will be marked as community wiki unless he adds more body content. If the user decides to post the answer anyway, the answer is marked community wiki and no reputation is gained.
Deny: Outright deny posting the answer.
This should reduce the number of users posting small and cryptic answers linking to an other site.
I think a change is required as this has become a community problem and this trend cannot be reversed on a case-by-case down-voting of those types of answers. New users have no idea that this is frowned upon which is why this problem needs to be solved systematically.