Ari Lamstein has been working on a new feature for the past couple of days and it is nearly finished. Here are the soon-to-come developments in his words:
We will soon be rolling out a feature where you can comment on Answers to Questions. Many Hubbers have said that they would like to have a deeper level of interaction on the Q&A portion of the site. You will be able to use the commenting feature to thank a user for a particularly good Answer, as well as to ask for further clarification.
The commenting feature will work very similarly to how comments on Hubs work: you will have a short window where you can edit your comment, and the person who asked the question will be able to moderate comments. While you will be able to leave multiple comments on a single answer, to prevent spam you will not be able to leave multiple comments in a row.
Here is a close-up look at the new and improved options below each Answer:
Additionally, you will be able to see the number of comments associated with each of your Questions on the stats page for Q&A under My Account.
This feature will roll out within the next day, so keep a lookout! You will be able to thank Hubbers for good Answers, ask follow up questions, and build upon Answers left by others very soon.