Sites like Socializr, Evite, MyPunchbowl and Renkoo let you create your own party or event and invite your friends. Then you and your friends can plan a party and everyone will know where and when the party is.

Socializr even lets you set up a profile page. modify your profile page by using aspects of your other social networking sites if you want to. Pull in your profile background from MySpace and your photos from Flickr. Or design your Socializr site using your own unique style.

With all three you can notify your friends where you will be and when you will be there. Then they can meet up with you and you can party all night long.