I'm a freelancing software developer. I've created dayjugglr (http://dayjugglr.com - very early beta phase) as a side project because I couldn't find a tool to do what I needed pretty often - get a bunch of people to agree on a date for a night out.
The audience of dayjugglr is anyone who needs to organize a bunch of people - cat herders, I guess. No particular demographic group, but I expect it to be younger people.
The name is the goal. Dayjugglr allows people to juggle days - go play with it. The name can be part of the logo but doesn't have to be. The ideal logo expresses the idea of agreeing on a date for a number of people for any type of event.
My only design requirement is simplicity, really. Ideally, the logo, or a significant part of it, can be reduced to 16x16 pixels for a favicon and still be recognizable. A popping primary color might be nice. Keep it playful - this is not a commercial site.
Ignore the color scheme of the current site please - it will be changed anyway.