I have had a couple of peeps thank for the reps with a added reply - (whatever they are). I will explain.
If you look at the top right hand side of any ones post you will see a little green box. That is your level of reputations received. Its like a reward or thank you for helping out or making that extra effort. Like a detailed write up, pics and handy links. If you like what you see you can click on the permalink (heart symbol) and add to some ones reputation and if you choose add a comment. Just a way FTE shares the luv.