As you have probably discovered, there are hundreds of dating sites on the internet. I found over 350 dating sites when I started the Dating Services and Tips dating review site.
I noticed all of these sites could be organized into three types: online dating, speed dating, and matchmaking. Each service attempts to match people up in a slightly different way.
Online dating sites allow members to write a profile and then search other member profiles to find a potential date or mate. You can find general online dating sites as well as sites that cater to a specific ethnicity, religion, sexual orientation, hobbies, interests etc.
Matchmaking sites find potential matches for you. Once you complete a comprehensive questionnaire the site matches you with other members who are compatible with you.
Speed dating sites organize live events that allow you to meet a number of potential dates over the course of a few hours.
The pros and cons of each are explained further in the article: Best Online Dating Services.