(I will, someday, do something in business which results in greater economic impact than this blog post, but I oft despair of ever doing it in as efficient a fashion. High seven figures impact *just from the negotiations I know about* for one workday...)
It's been up seven years and gets about 500k hits a year; the typical person reporting results to me gets $15 ~ 25k; you can math it out from there.
(A ridiculous portion, and I mean truly ridiculous portion, is getting people to to not accept the first offer.)
"So they offered me $X and I was overjoyed but then I remembered your post so I asked if they could do better AND GUESS WHAT HAPPENED."