One startup that presented at the Next Web in Amsterdam is Wuaw, which just launched a mobile app called WuawWee. The app lets you upload photos from your phone to a widget on various social networks (Facebook, Bebo, MySpace, iGoogle) and chat with friends. You can see the chat on your phone, and they can grab the widget and put it on their MySpace or Facebook pages. The mobile service costs 5 Euros per month, or 1 Euro per use.
Ads will be embedded in the desktop widget, and radio streaming will come soon (Wuaw has streaming deals with European radio stations for its MyRadio product).