Another suggestion is http://www.mail-list.com. They charge around $1/user/year, which seems pretty reasonable to me (one reason I didn't sign up for Breeze is that $25 seemed like a lot for a lot of use cases, like a list for a season-long sports team). But in the fine print, it says the minimum is a $99 purchase per organization per year.
Their final suggestion is http://www.emaildodo.com. Call me a snob, but the late 90s design scared me off.
So none of these seem like great options -- I'd rather use http://librelist.com, which is run as a free for-the-good-of-the-internet service from what I can tell.
Assuming Google and Yahoo Groups are too heavy-handed for a simple mailing list, what do you use? Any experience with these?