Some sites are broad-based, with members coming from a variety of backgrounds looking for different types of relationships.
However, market share was increasingly growing by several large commercial services, including Personals. Some online dating websites provide webcam chats between members.
As online dating's population becomes larger, sites with specific demographics are becoming more popular as a way to narrow the pool of potential matches.
Other sites depend on advertising for their revenue.
Some sites such as Ok Cupid.com, and are free and offer additional paid services in a freemium revenue model.
Ease of payment is also generally higher, with such sites accepting a variety of online currencies, letting users charge the payment to their cellular phones, etc.