zdgn - 11:04 am on Jun 21, 2012 (gmt 0) [edited by: zdgn at 11:11 am (utc) on Jun 21, 2012]
Is there enough of a future in Adsense that you will keep creating content even when the payback becomes smaller and smaller?
No: Not when hundreds of thousands are creating almost-similar content with the same speed, knowledge and savvy. In this case, advertisers are limited, publishers are not.
Yes: Of course, when you are a respected authority, or at least part of an authority circle, which is creating greater content with greater speed, knowledge and savvy. In this case, authority publishers are limited, and more advertisers will compete to follow.
All in my humble opinion.
[edited by: zdgn at 11:11 am (utc) on Jun 21, 2012]