Oh, sarcasm! It's nice that you don't reply to me and post it as a new message in the hopes that I won't see it and not reply.
Those words I said go to both you and other artists. It's not a personal message to you. As Mr Thorns said, if something is off, we will post publicly to warn other artists from taking a risky/low paying job. There are a lot of artists who don't know what a logo is worth and will work for 10% of what they should be getting simply because they don't know any better.
This is a public forum. People will post feedback rather you like it or not. When something is off or a client seems suspicious other artist will publicly post in order to warn other artist or to give them input.
The reason people post here instead of giving you a rate is because of how little it is. Normal logos designs usually go for about 400-600$.. now one for a corporate company?
50$ isn't just an extremely low offer, its a slap in the face of the art industry. It's like you think making a logo takes 45 minutes tops, when in reality, hours/days go into working on it, making variations, vectoring, etc. This could EASILY take a week and 20+ hours just to get it to look right. Now you can see how 50$ is so low most people won't even bother giving you their rate.