Verified answer

You get points on your profile by answering questions, having your answer picked as best answer, by voting on undecided questions, & picking best answer to your own questions, 4 hours after you posted it.

You can comment to people who answered your question, by going to question, which you will find by clicking my profile, then scroll to where it says my answers, & my questions, click my questions & go to the question you want to comment on, it will show you all of the answers you have received for that ?, click edit in your question box, & comment. While you are there , in your profile you can click my answers look for ones you answered, that says in voting, find your answer & vote best answer, if no one else votes on other answers you could receive best answer & get 10 points. I check mine everyday & vote on my answers.

If you want to comment on other peoples answers to other peoples ?, click the answer button, & comment only be sure to add an answer the question, otherwise it will be considered chatting & deleted.

Hope this wasn't confusing & answered what you wanted to know.^

Actually, I have no clue what you mean. "comments on other peoples' what?" Their profiles? You can't.

Comments on answers to your questions? You'd have to click on their avatars to see if they allow email. If they do (and you also do), you can email them with any comments or questions about their answers.

As for earning points, the points aren't actually "on your profile". They're just points you earn here on Yahoo! Answers.

Answer lots, and ask less on the earlier levels. You'll need 250 points to get to Level 2. Vote undecided questions and answer your daily limit when you can. And ask few questions, but when you do ask, be sure to choose a Best Answer, as you get 3 points back for that. Click on the link below (or your points or level number next to your avatar). How to move up levels and the whole scoring process is all explained there.

http://answers.yahoo.com/info/scoring_system;_ylt=...

CHOOSING BEST ANSWER

After your question has been posted for 4 hours, you will see the blue "Choose as Best Answer" button beneath each answer. If you've received a satisfactory answer, and more than 4 hours has elapsed, go to your question, and to the answer you want to choose as best, and click on the "Choose as Best Answer" button and follow the steps.