Match.com
" Last year alone, more than 500,000 singles found meaningful relationships through Match.com's online personals and singles ads. Match.com pioneered the Internet dating industry, launching in 1995 what is now the most recognized dating service worldwide, and today serves more than 15 million singles in 240 countries."
 

What a Match.com Membership Includes

Match.com has a very healthy budget for tweaks and features, which is obvious as soon as you click on a link to visit the site. A snazzy layout, easy-to-use search features and numerous magazines, newsletters and advice columns round out the already jam-packed Match.com site.

What is more interesting however is what Match.com doesn't have: chat or instant messaging features. As well, free members can't even look at someone else's profile much less reply to a paying member who has sent them an email without first paying the monthly fee. You can peek around a little bit after creating a profile (called a 'portrait' at Match.com), but you won't get very far without becoming a full fledged member. With no real way to view the site without grabbing your credit card, read the terms of use fully (which are still not very forthcoming; nowhere do they mention how much a monthly membership costs) before signing up.
Unique Features at Match.com

This is where Match.com excels far above and beyond most other dating sites today. Their special features outnumber their regular ones - so much so that there isn't enough space to list them all. A chosen few at the time of posting, are:

* MatchWords™: Similar to the keywords used at your favorite search engine, users can define a list of words that other users can search them out with. You'll even get a list of some of the most recently added and most popular MatchWords™ to get you started.
* Match.com Platinum™: A personalized, professional matchmaker is available for users who don't have the time to weed through the portraits on Match.com.
* MindFindBind™ With Dr. Phil: For those in need of assistance getting started with online dating, Dr. Phil's monthly program will walk you through how to get your mind ready to date, how to find someone perfect, and then how to bond/bind with them over time.

Match.com Membership Costs

Unfortunately, Match.com keeps their pricing structure fairly hidden, and it takes a bit of searching to find out exactly what their fees and terms are; for instance, the Match.com Billing Terms page comes up blank and their Subscribe page makes no mention of associated costs. Make sure to read the fine print before giving Match.com (or any online dating site) your credit card, as it is normal practice to bill automatically for another month (or whichever package you'd chosen previously) once your service term has ended.

Upon posting, the currently monthly rate for Match.com was $30 a month USD, with extra costs for some of their unique features (like MindFindBind™ With Dr. Phil, which is an extra $8/month USD).

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Resource: http://dating.about.com/od/sitereviews/fr/match.htm