I agree with most of what's been said in this thread, but I'd like to add one additional point that sprung to mind as I was reading the original post.Writing on forums like this also entails a key aspect that doesn't apply to humanities-type papers nor legal writing; it's totally voluntary. You aren't being graded and there aren't any formulas you have to follow or topics selected for you. For me, the inherent pressure of any assigned writing is what sucks some fun out of writing. Internet forums are inherently going to be a different exercise altogether than anything you're doing for school, or even for a client, in terms of style, time, and content pressures. So yeah, I don't know if you can use a like for posting online as any kind of basis for a talent in legal writing.