Knowing what someone is into sexually is only part of the story.
You may also want to ask a friend to call you during your arranged meeting time to check on you.
Do not allow your password or screen name to be stored in a public computer.
If you share your computer at home, you should disable browser features that save user names and passwords, delete your browsing history, and empty your cache after using the site.
Do not be dependent on someone else to pick you up or drop you off.
Use public transportation or a taxi if they are available.