I keep seeing questions where one or more of the “answers” (often from drive-by, 1-rep users) is of the I have this problem too variety.
I just checked Meta and was not surprised to see a bunch of mentions of this, but was surprised at the lack of proposed solutions.
To figure out a way to prevent this requires getting into the mind of the people who do it. Ostensibly, these people are Googling around for a solution to their problem, then stumble upon the SE page and find that there is no satisfactory answer, so they just scroll down to the bottom of the page and type into the big text field as they would normally do on FaceBook, blogs, and the like where responding to a post/thread means entering the response into the big text field at the bottom.
One solution then becomes to not show the big text field by default. That way, the—novice—user is forced to look around for a method of text-entry, and will be much more likely to see the add comment links. Then, whomever wants to supply an actual answer can simply click an answer this question or provide solution link that expands and displays the Your Answer section. Not only would that have almost no impact on answerers, but it leaves the page looking cleaner by default since most people are not going to be providing an answer anyway.
Further, the answer section could be automatically collapsed for users with 1-rep (or
This would be a low-impact, easy-to-implement way to prevent answer-comments.