attorneys? You make it sound like you'd sue him over a Forum where he used an image he found online.
its No Different than coke, disney, harley davidson...
its a Business logo, he didnt claim it as his own.
most forums about other things, like a rockband or whatever, have various people using the same avatars. if you read the name, not just see the image, you Know whos posting.
a simple "could you please change your avatar, its the logo of my business and i'd appreciate you not using it" could have taken care of this, but YOU were the one that blew this completely out of proportion. so for him to take a defensive stance after your ranting, is completely understandable in my opinion.
besides, you're no better than the kid. you're using a logo drawn FOR you. as in You didnt create it yourself? The Artist owns the image believe it or not, they Let you use it and copyright it. So i suggest Not acting like you're his age about it, and take a more adult approach in the future.
Because i bet its not just in my eyes, but after this, he seems the more mature person of the two, and hes only 16.
and for the record, i Design websites using flash, html, xhtml, and javascript. but you dont see me going "omg no dont use my web designs, i made it its mine." or freaking out over people using logos i design on forums for bands.
Someone LIKES your Company's design... its not a bad thing.