Here we are in the summer doldrums. Also included are some that may be useful for preparing for and learning about travel health concerns. The Society for the Advancement of Travel for the Handicapped, an international organization, has a helpful webpage with mostly original content, with some links. They also have an accessibility guidebook in full-text, aimed at those who provide travel services. Plus, there's a dictionary of travel terms that would be useful for anyone.
Many links are to meta-sites that collect people's travel stories.
MapQuest is a very useful site, offering a plethora of travel and map-related resources. Also some travel directories. As always, never give your credit card information online unless you feel comfortable doing so and have a guarantee as to what you will get. Many areas of the site require registration, which is free.