A dialer option is good and offeres those without a credit card the option of viewing your content. But before I went that route if I were you, I would evaluate my content area because in order to make good money with it then you need to make sure you have enough GOOD solid content in there to hold their attention for awhile.
This is not to say that you don't have good content, I haven't seen your site, but just ingeneral, I have seen some good sites try this and not have good hold times because they simply didn't have the "right" content. Movies and live feeds and such things that are going to hold their attention will work well, just pics will not work that well.
This is just in my opinion and experiences though.
Tam
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