I've got a theory that dead sites (or sites that don't have fresh content added to them regularly) earn less than sites with regularly added, fresh content. I say this as I went on vacation recently and quit blogging for over a week... income went way down and now that I've started up again, income has gone up. I'm guessing maybe there is a higher payout for sites with fresh content? Just a thought... anyone else notice this?
I think maximum webmasters known this issues. Search engines always love fresh content by spidering the web.
it's a common knowledge my friend... but the content is also must be a good quality contents... since you mention that when you start re-updating your blog than your earning is coming back to you...than i guess you've already done a great job at giving your visitor a good quality contents.. good for you......[thumbsup]
Fresh content definintely brings in more money. Its a fact that older the content, lesser the money. So you better keep updating your sites often. I would suggest scheduling site updates.
i havent ever noticed any difference. of course new content may bring in more traffic, but the cost vs number of clicks doesnt seem to make a difference.