Forum Moderators: mack
I don't think that this would really be good for a sales type of website because you are trying to run a business from the site not put your personal thoughts up.
What you might do is put a forum, similar to this, on the site so people can give you feedback but it all depends on the product. I have seen some good forums on software pages where people put their thoughts of the software and other people comment on them.
On the other hand I doubt someone like Maccas is going to put one on their site because all they would get is hate mail :)
The true value of a blog is in the ease of updating it. By all means use blogging technology to add news, but don't feel you have to stick to the usual blog format in order to be successful.