Synergy, Value for Money, and eBay/Skype

I just had a quick look at an eBay auction I'm in and noticed a picture of a phone. Obviously that piqued my interest so I took a look, and it turns out eBay will now send you either an SMS or an IM when you are outbid, the IM containing a link to rebid. Nothing too excited, but I thought I'd sign up with my Skype account... except I can't. They only support MSN, AOL and Yahoo. Given that many people I know now only use Skype as an IM client, because the call quality is so poor and the IM UI quality so much higher than the likes of MSN, this seems like a major oversight.

$2.6bn well spent?