Below are some quotes from the Ideas forum, where many new potential mapmakers make their first expression of interest to contribute to the site:
you want help with a map even though you say you already have the map; i would say that you're talking shit
when someone is "talking shit" its more like they're gloating about their superiority over others... i think he's just driveling, to be honest
The gameplay would be stupidly crap because its basically just one big bottle neck
I personally don't like it [...] Or maybe I just hate all Americans and American products
This is an EXTREME case of poor textures/bevels - they look like someone has just thrown them on
This is the first reply some people see to their ideas. Some of these comments are just plain terrible, and I can't imagine anyone saying these things in real life.
If you don't like a map, you don't have to comment on it. If you think the map can be improved, make a comment that will aid in its improvement. Shooting someone down in flames does nothing but discourage newcomers from being part of the community. Recently, I have heard word of two long-time contributors get frustrated to the point that they are directing their attentions elsewhere. This is not good. The more we encourage and coach new contributers and current mapmakers, the more good maps we will have, and the better the site will be for it.