The new Lightroom 3 and Adobe Camera Raw 6.1 have a lens and body database included to automatically correct your image.
For a small description of this new features:
Quickly and easily perfect your images by automatically reducing lens defects like geometric distortion, chromatic aberration, and vignetting with single-click profiles. Even images from the best lenses will be improved.
But the problem is, for Nikon and Canon, only a limited set of lenses and bodies are included, Adobe has released a program to create your own lens profiles but I haven't been able to find a community which posts their profiles. I image a nice database for this could be created to share these profiles with others.
So is there a community which shares these profiles or does everyone keep the profiles private?
To clarify, yes I know that in Photoshop you can search for other submitted profiles, but it seems to lack quality control and cannot be used in Lightroom.