A site to propose informal gatherings. The problem with MeetUp and EventBrite is that it requires someone to do the research on what everyone likes and send out

A site to propose informal gatherings. The problem with MeetUp and EventBrite is that it requires someone to do the research on what everyone likes and send out proposals. If a proposal fails they're back to step one. I'd like a site where a circle of friends can add events, meetings and such they are planning to attend. The site shows everyone in the circle when everyone's available and what they're doing.