IceCat designed the logo, but Webby owns the site, so you will have to wait for both of their responses before this is official, but I know that Webby's busy planning for the trip tomorrow so it might be a day or two before he has a chance to respond.In the meantime, I'd assume that using the SB.com logo is alright, since it is being used as a link to this site, which essentially makes it a free ad (not something I'd expect either of them to complain about).
...if I'm wrong, they'll respond and let you know.
You never know what might be up my sleeeve...