What are the stars for?

[McKay Sleight]

I see a series of stars on a few of the posts. I am unable to discern what they are for.
TIA

[Dan Hintz]

See the "Rate this post" link at the far right in the gray bar? It let's us assign a quality indicator to threads... it's rarely used, but it's there.

[Stephen Cherry]

I just voted!

[Jim Rimmer]

I just voted!

I never noticed that so I voted, too.