netmeg - 4:27 pm on Jul 27, 2010 (gmt 0)
Interesting. I have a site that is really really hugely popular for about six weeks out of the year. I get a ton of links during that time - mostly blogs, newspaper and TV websites, and some government. This year a lot of Facebook links too. Then the rest of the year it's pretty dead. Some of the news links disappear or get archived; the other links stick around but don't send much traffic. The government links often stick around (out of webmaster lethargy if nothing else)
My TBPR, for what it's worth, kind of jumps around in a similar pattern.
After watching all this for the last seven years or so, my gut feeling is that the government links that stick around are still gold (even if they are from some tiny little village website with little traffic but a precious .gov TLD) but the date-based ones get stale and devalued.
Would be interesting to test whether this is true, if I had the slightest idea how to do it.