Looking through the zip, the one for feed accounts is the RSS icon, which LJ used for a little bit then replaced because that's supposed to be the standardised "RSS feed here" thing, so a syndicated account should have something different?

But overall, they look good. Not sure the 'post' icon is distinctive enough though, I plan to have a 'share this' link in my layout for a lot of services, including LJ and DW, needs to be a clearly distinctive logo look I think.