Well, ya star a post when you think it was made to advance the thread and you found you learned something by the post. You can also star a post to
show support without having to post yourself. There are rumors that forum gangs use stars to boost their fellow gangmembers posts, but, I tend to see
the good in ATS and would never think of my fellow members as forum gangmembers, so I tend to stick that in the "Rumor" box.
To star a post, just bring the cursor arrow over the star in the upper left corner of the post and click it. You can only add one star to a post.
More
here
Hope it helps,
Cuhail