Here's my opinions on this...
If you wish to show off work then your welcome to, but note that if you do post it up then you have as good as given a green light for critiqué.
And also remember there are varying levels of people here.
Now for me, if i feel a model is not worth commenting on i won't ... often this means my comments are kept for only the better developed work around here (but not always).
This isn't to say that everyone will respect the fact that you are not even close to thier level to comment upon your work as if you were ... It would probably be good to note though, that if you decide to make yourself appear bigger than you really are then immediately you will gain my attention and not for a good reason.
So if you've only been modeling for around a week or so it would be a good idea to keep a low profile rather than make out your the best thing since sliced bread - this will go down well within the forum, however you will loose alot of respect from the more experienced amongst us.
And don't be surprised if you post a model of a cube and get a few flames, because alot of people don't understand the tact that should be taken because alot of people who produce work like that are actually pretty proud of it.
I gained a reputation around RGT about my harsh form of critising work, however if your around much you'll notice i only really give help to those i feel who need it and whenever i comment i will always point out something which could be fixxed as well as a way to actually achieve it. So if you can put up with my absolute lack of tact when commenting you'll see you can learn some quite good tips.
Don't forget alot of jeleasy also shows its head around the art area, i'm unsure to why - but if you create something good then it will be completely stripped by a few individuals, alot of users have no sense of mutual respect. The whole arena isn't exact something perfectly friendly so just be careful if you do post.
But i'd hate to see people not posting as we're finally starting to see people posting work here and getting the 3D Forum going which i'm happy to see - this is probably the busiest i've seen it since i joined in August
Within the Epic battle of the fates the Shadow and the Angel will meet. With it will harbinger the very fight of good vs evil!