How do you earn points?

Question

do you get points based on how long your answers are? and do thumbs up and thumbs down get you points?

also, do you get points for people aswering your questions?

Answer 1

by answering questions - 2 points

enter this world of ans. -100 times(first time only)

1 point a day to visit this site.

ask questions  5 points reduction

Answer 2

Begin participating on Yahoo! Answers One time: 100

Ask a question -5

Choose a best answer for your question 3

No Best Answer was selected by voters on your question Points Returned: 5

Answer a question 2

Deleting an answer -2

Log in to Yahoo! Answers Once daily: 1

Vote for a best answer 1

Vote for No best answer 0

Have your answer selected as the best answer 10

Receive a "thumbs-up" rating on a best answer that you wrote (up to 50 thumbs-up are counted) 1 per "thumbs-up"