Oops my mistake it should be ...
IMHO, selling link on an old post would be very risky since it would take a simple diff. between two posts (for G or any other SE) to find out that a new link was added there.
I didn't mean the posts vs pages discussion but
OLD posts vs NEW posts discussion.
If at all you are updating your OLD posts with links to authority sites then it shouldn't be any problem but if an old post of yours is getting updated with a link to not-so-known-site (
really difficult for me to define this term, probly I can define it as low
PR site or a site that you don't link to often or a site that is already involved in buying links earlier etc etc ) then it may ring an alarm bell...
I may be wrong but just that I want to tread cautiously... About 6 mnths back Big G reduced the
PR of one my sites from 4 to 3 to 2 . I never sold/bought a link for that site though.
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