25 Nov 09
12 Dec 09 4:25 am
Hey man good question....... No, I don't think a page can not be too old to be of value for a linkback.
As far as I know, the older the page, the better and more trusted the link is by google. Link aging is also a factor in google algorithm, I hear, so the longer your links are out there, the stronger they can influence your rankings.
Some of those pages may not be in the primary index, or they are adding the nofollow tags to outgoing links, in both cases, this is bad for backlink value.