I was looking for the [about] link a little while ago, and was quite annoyed to discover that it wasn't at the top of the page where it used to be.
It was pointed out to me that the link disappears automatically when you hit a specific amount of reputation (5K on graduated sites, 2K on beta sites), which explains where it went, but it doesn't lessen the irritation it caused by not being where I expected it when I wanted it.
I can understand hiding popup reminders based on rep, or large blocks of text that take up a lot of screen space, but hiding a small static link when a user hits a specific rep threshold is unexpected and very aggravating when trying to find the link in the future.
So I would like to request that the [about] link stay visible at all times at the top of the page, and not disappear based on reputation.
(I found out later that there is another [about] link in the footer of the page, but I would not have noticed that without another user pointing it out to me, as I was used to the link being at the top of the page, and would not have thought to look for it in the footer)