Single payments for regional advertising of profile (one-time appearance in scrolling banner for $1 – user picture, link, short text for mouseover; bidding war for stationary second banner cost of $1/minute).
Yes/No; While it is free to use, POF offers premium services as part of their upgraded membership, such as seeing the date and time a user viewed your profile and allowing you to see whether a user read and/or deleted your message.
Though the numbers don't necessarily reflect actual users, they're good indications of each specific site's popularity.
In addition to these services, popular search terms for Yahooligans included "Christian dating," "cougar dating site" (yeah, we know) and "plenty of phish dating." That last one must be a common misspelling of website Plentyof Fish ...
Whether you're focused on your career, haven't found the right person or are simply exploring relationship options tailor-made for the digital age, online dating can be a great step toward improving your love life.