For those of you who travel to other areas here is a list of some national service directories. Some provide local information but, most have listings for all 50 States and other countries.

NOTE: I cannot vouch for these services, this is only a guide of national information sites.

One of my personal favorites. It provides independent escorts, escort services and reviews.
Female Companion Online Database. National information.
Adult Service Provider Discussion Network. This site looks extremely promising.
National and some International Escort Listings as well as a review section.
Escort and Adult Entertainment Directory listings for most major metropolitan areas.
Searchable National adult guide.
Adult personals and swingers directory.
Dating info in all categories including escorts.