Hi, I added another warning on the anonymous vandals page. The rule of thumb is that they don't get banned until they've had a final warning, and the warnings escalate up.WolfKeeper 18:35, 31 October 2007 (UTC)
To warn someone you need to add {{subst:uw-vandalism*|page}} -- ~~~~ to their talk where page is the name of the page they vandalised (without square brackets) and replace the * with the level of warn. Generally start at 1 and go up to 4, there's also level 4im which is basically the same as 4. If they're already at 4 and they vandalise again (within a short time), then you need to report them at Wikipedia:Administrator_intervention_against_vandalism and one of the admins will swing past and take a look.WolfKeeper 18:35, 31 October 2007 (UTC)
However, if they keep vandalising at intermittent periods then the rules basically say that they don't get banned, but if the account is vandalisation only, particularly if you point it out, the admins will often suspend the account anyway. Hope this helps.WolfKeeper 18:35, 31 October 2007 (UTC)