Of interest, I’ve have had a growing suspicion that new link-votes that are suddenly inserted into older articles have less value than if the link-vote uploaded fresh with a new article.
In a recent test I did I placed a link-vote in an older article that had an existing PageRank value of “3.” This link-vote was targeting a high-level key-phrase and I pointed it toward a non-optimized related website and the website moved after 3 weeks from not even ranking in the top 1000 to ranking at the 91st position.
After waiting a few weeks I decided to delete the link-vote and within 3 days the website vanished from the top 1000 results.
From there, I waited another week and then I placed a link-vote (on the same domain) on a freshly written article and simultaneous uploaded them both at the same time. What I saw after that was rather surprising as the same website suddenly re-appeared at the 41st position the very day it was first crawled.
What this told me was two things:
1) The obvious: the fresh link-vote placed on a fresh article on the same old domain influenced the search engines more so than the link-vote placed on the older article that had an existing PageRank of “3.”
2) While it is common knowledge that link-votes take about 12 to 21 days to be realized in the search engines, the second link-vote that I placed on the same domain was realized the very day that Google first crawled the fresh article.
Any thoughts?