The convergence of classifieds and directory content is also something we expect to see more of.

Good point Mike.
In addition to the above, we are seeing a convergence of directory content and wiki-like sites, where users can upload their own photos/correct or suggest listings. It will be interesting to see whether this is an area where the traditional directories want to play in due to the difficulties in monitoring such user input. Locally (in Australia) this has not been the case.

Yelp has done extremely well at disguising the categories and sub-categories of information that sit behind the interface.
Citysearch on the other hand allows for business reviewing like Yelp, however its organisation appears very directory-like.

Cheers,

Mark