organizing photos on social networking site

[elemelas]

Hi guys

What would you think would be the best way to store the photos on the server, while creating social networking site ? Should the script create different folders for each user, and then different folders for each albums etc ? Or have you got any other ideas ?

Also, i suppose script should really rename the files to some unique name to avoid overwriting, but how to do that ? Should I create a random string and rename the file while uploading ?

Any ideas would be appreciated

Thanks