I don't like the new rosity much (although I must admit I wasn't much of a fan of the old version either).

Cons

• The site is still slow (and unreliable).  I think this has been beaten to death already.
• I have a hard time navigating the site.  There are way to many links on each page.  Any intro web design course will tell you not to have too links on a sidebar.  It makes it harder to navigate the site. 
• Things should be catagorized.  I have "My Account", "My Options" and a "My Profile" page.  These should all be grouped together in a "settings" so everything can be easily found.  I also have a "community homepage" and a "homepage"?!
• It would be really nice to have a human friendly url that I can share with friends and family!  Currently my gallery address is a long URL with just a gallery ID number.  Sure, someone can copy and paste it into their browser, but my mother doesn't know that.  I tag my images with my deviantArt address because it is simple and easy to remember.
• The galleries have a very small next page link.  Again, an intro web design class will tell you all about making common links such as a next page link bigger than less common links (such as "7" for page 7).
• I don't want to get emails through Rosity.  Messages are fine, but leave my email alone!  Spammers can very easily use this to collect email addresses to send spam!
• A small thumbnail links to a larger thumbnail!!  It is just an annoying way of Rosity to save bandwidth.  An option to disable this 'feature' would be great!
• The large thumbnail uses javascript to open a new window.  I have two problems with this: 1) The new window is smaller than my screen so I either have to scroll to see the whole image or resize the window every time.  Very annoying.  2) I can't middle click on the large thumbnail to open the image in a new tab in Firefox.  Grrr.
• Emoticons or smiley faces may make everyone's post look like they were writeen by a 13 year old, but they are very good at helping convey humour, sarcasm and other emotions that are not easily expressed in writing.
• "Renderosity Art Community" should be "Renderosity Online Art Store".  I know they have to make money somehow, but the "MarketPlace" is being shoved in the forefront.
• There are many links that no longer work and thumbnails that don't show images.  (Like the weekly window).
• Can't reply to comments on a gallery item.  Being able to reply to each other's comments (like a threaded conversation) enables two way discussion rather than the current one way communication.

Pros

• Better statistics!  Yay!
• Automatically generates my thumbnails!
• 200x200 thumbnails are bigger than most sites.

Overall, Rosity is better than what 1998 had to offer, but for 2006, it is subpar.  Great fractal community though :o)