If you go to Achievements in your profile, there is one for years read, which shows a date that I assume is the account creation date.

Correction: Doing the math, it looks like the date on which the achievement was earned, so subtract off the years read from the date to get account creation date.

Doesn't work for mine. I just have "Days Read" (no "Years Read"). My "Days Read" is a small number and dated 2009, but I was posting comments in 2007. All of my achievements are from 2009.

In the early culture your slashdot id # of digits was bragging rights, at the time I was proud of my 6 digit, but the culture there is very toxic now and all it means is I was older or an earlier "lucky 10000". Status seeking is a childish endeavour, but in my defense I was a child.

You must be new here...

My 10 years read is in 2003, which would mean I started reading in 1993, but Slashdot says they only started in 1997.

I do have an id in the 7x,xxx range. Not sure if I can work much out from that.

There's this thing called "human memory", heard of it? :) Kidding. It is easy for me because I was living in Porto for a year and I chose my username to be the street my apartment was on.