Thanks button

[BlacknTan]

I'm still new to this forum, but I've participated on a few niche forums in the past.
I guess it's in the software, but i've never seen a "Thanks" button before... That button at the bottom of each post in which a thank you is offered for useful information in the post.
What is the protocol for using said button, if any?
I've gotton alot of useful information from the good folks here, and attempted to thank everyone, but I wonder sometimes if I've missed someone inadvertantly... I have no desire to insult anyone that's offered me good and helpful information...

Still getting used to things around here, but interested in thoughts also..