Why are Dating Site Prices Going Up?

One reason surely is that the big sites have been spending a lot more on advertising. See this article from BrandWeek.com
The advertising intelligence service said that while total media spend for such efforts was $149 million in the U.S. in 2004, it rose to $310 million the following year, and hit $430 million from January to November of 2006.
NMP said the most recent figures for media chosen showed cable TV led the pack with $130.6 million in reported ad spending last year. The Internet was a close second at $127.3 million, and spot TV ads were third with $75.1 million spent.

The big question is whether these dating sites offere added value services over free dating sites and social networks.

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