People get a tad bit upset with some warriors, when they spend the time to help those warriors out, and the warriors show no appreciation. (IE, they don't even use the thankyou button, and some don't even go so far as to say thankyou).
I would have to think that some just don't see that button there...Maybe they overlook it, because really...why do they ever have to look to the very bottom right hand side of a post? Since we read English from left to right, it's not something I would immediately expect someone to notice or pick up on.
So what I am proposing then is a system like this:
New warriors have to thank someone at least once before they can PM, alongside having 50 posts.
And they should be keen enough to figure out how to thank someone, and it will at least teach them how to use the "thanks" button, and will also SHOW them where it is in the first place.
After all, isn't this forum about giving back? Why not make people learn how to give by at least starting with a thank you?