I have spent the best part of the last 2 hours manually checking that every registered member on the forums has a SteamID listed. The ones that did not got moved to the NoSteamID group (including a few of our own!). Bet someone will tell me an easier automated way to do it now :(
Should be fairly easy to keep on top of from here on in as we only have to check the recent ones.
I know we have no SteamID checker on the server yet, but I live in hope that we will do someday.
TL.