not really, because is somebody on a forum can pick out flaws in your music, so will record exec's... also people on forums beleive it or not and as ludacris as it may sound, people on forums are all potentials fans and customers to your music, so their opinions still count.

yes some take it as a hobby and nothing more, so to them the opinions wont really matter simply because they arent wanting to do anything with their music, then there is people in different countries aswell who will probably just want to make an impact on their countries scene and thats it(like me). but at the end of the day, every1 is still a potential customer of your music and you need to think of it that way, because as an up and coming artist, you need as many "fans" and "sales" as you can possibly get to help increase your reputation further and quicker.