My Count_Impressions plugin does this. On high traffic servers, it will cause VERY heavy load! Should be able to download it from Plugins > Plugin Download > List.
it says: Internal Server Error The server encountered an internal error or misconfiguration and was unable to complete your request. Please contact the server administrator, webmaster@mydomain.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.
PLUS when I put the tag <%track_impressions ($ID)%> in links page, it comes with this error: Error: Variable 'track_impressions' is not a code reference.
You got that right, I bought all Andys Plugins, there were a few hiccups with some. Andy did within usually hours sort out the problems. The backup is second to none - now why can't we get that everywhere in life.
Best wishes Andy, you are one person who deserves good things.