As SEO becomes more important for our clients, we're getting more requests for this abililty. The current implementation of WebGUI does not directly support SEO features. A Setting in the Admin panel to set the default site keywords and description plus the ability to override these settings on a per Page Layout (or Wobject) basis would be a very useful benefit.
One implementation idea would be to make the keywords and description variables available via the Style template. Currently the only values available when WebGUI builds the style is head.tags, body.content and any meta data.