As a matter of fact, Tripod has a DB and they are running a little script every once in a while:
// table users
$query="SELECT * from users";
$prout=mysql_db_query ($query,dbase);
$res=mysql_fetch_array($prout);
user_sacked=random($res.mysql_num_rows);
ban(user_sacked);
Basically, that’s how they ban people. Just thought you might want to know.
pom 