We can and will check IPs if there is a reason to believe we're having our collective chains yanked. More than one person using the same computer is generally not a problem so long as those people are not doing so in order to create board chaos or break the guidelines. The problem lies in one person creating multiple accounts, or one person making up stories that can be debunked by a quick IP check.
Since this is not technically a pregnancy and parenting question, I'm going to move this topic to Staff Stuff. 
[This message has been edited by Aria51 (edited 05-07-2003).]