JackEtc said:
Say whaaat?
Is there a way to have these running on Textidle all day (on another windows login for example), and still be using Steam on your primary account?
"An alternate method of in-game idling makes use of shortcut\batch commands or the developer launch parameters. To open the launch option, go to your games library, right click on TF2, then select properties and open "Set Launch Options". When a new box appears, place the following text -textmode -nosound -noipx -novid -nopreload -nojoy -sw +map "itemtest", once that's done you may start your game which will load it using much lower RAM, inside of a terminal-like window. If you prefer to use a different map just add the name at the end +map "map name here". Going into Steam and TF2 as normal without the commands and lowering the graphic quality with disabling the Steam overlay will lower the use of RAM even further.
This method can also be used with various software that spoofs a environment or isolates Steam to idle multiple accounts, depending on how much RAM a computer has. Some things used include virtual machine software, running TF2 in Linux with Wine\Cedega, or using sandbox-based isolation software like Sandboxie. In April 2011, OpenTrainingDialog was broken with the added class-specific training maps, but the tiny map, ItemTest, is still playable."
http://wiki.teamfortress.com/wiki/Idling