[MMario987]

This Plugin is meant for peoples steamids to be logged for people who own servers can tell if someone changes there name after they are about to be banned.

[PC Gamer]

This works as advertised. Thanks!

Recommendations:
1. Edit your post to inform users where the data is being logged. In this case, it logs the data in tf\addons\sourcemod\data\logging\playersteami d.txt
2. Let viewers know that a good way to view that file is with the free application called 'notepad++', available here: http://notepad-plus-plus.org/
3. Give an example of the data being displayed, like this:

"PlayerInfo"
{
"bot"
{
"connections" "68"
}
"STEAM_0:0:1XXXXXX"
{
"connections" "3"
"name" "ImmaPro"
}
"STEAM_0:0:2XXXXXX"
{
"connections" "1"
"name" "MaryPoppins"
}
}

[Mirandor]

good idea but you'd better use mysql to store these informations. because the txt file should be quickly very large and the server could get lag each time a player gets in the server...
Also you should use OnClientPtAdminCheck instead of OnClientPutInServer...