twitter - How do I remove Growl notifications for one contact only in Adium?

I've written a little script to pipe Twitter in and out of Jabber. I'm using Adium on OS X to get these messages: and I have it so when Adium is in the background, it pops up a Jabber notification. I like this behaviour, but I don't want it to happen on the account I'm using to send the tweets into Jabber - because, you know, having a Growl notification pop up every time someone tweets is quite annoying.

In Adium, I've found out how you can set specific notifications for a contact, but it only seems to have the ability to add extra notifications for a particular user, rather than the ability to remove notifications. I could make my defaults set to be the least noisy I ever want, but then I'd have to replicate the settings I want for normal people for each person (possibly by hand) when all I really want is for my Twitter bot to be quiet while letting human contacts use the default set of notification preferences?

This is fixed here.

The new feature can be found in the Adium 1.5 nightly builds here.

Those nightlies might be pretty unstable. I don't know if they work yet, I'm just now trying one out for the same reason. So far so good.