Thank you button

[router]

How hard is to make a thank you button? I have seen a mod like this in a invision board site. Basically there is a thank you button and all users that click there will be added to a post with all the members that have clicked in the button

[OvermindDL1]

Would not be too terribly hard, but what is the purpose?

[CapriSkye]

so people can just click the thank you button, which can eliminate spamming...

[router]

exactly