This was announced last month - Google now provides date based searching.
What does this mean for SEOs?
It makes it easier to find a list list of all the new pages Google has found on your site in the recently - by day, week, or month.
http://www.mattcutts.com/blog/useful...r-date-search/
Quote:
The nice thing is that you can change the value of as_qdr to custom intervals. Here are all the possible values of the as_qdr parameter:
d[number] - past number of days (e.g.: d10)
w[number] - past number of weeks
y[number] - past number of years
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If you want to find all the pages Google found on your site in the past month,
use a command like this:
http://www.google.com/search?q=site:v7n.com&as_qdr=m1