Xallien

I am quite aware that this is more of a design issue than anything, but I\'m creating Yet Another CMS and wondering what the best format for the storage of a user\'s data would be. Any insights people have had on this topic? A few example questions to express what I mean: - What should be the maximum size of the user-id field? - The efficiency of creation, modification, and access dates? - Password / encrypt / md5? - Reasonable signature length cap? - Avatar BLOBs? - Seperate user-prefs table? - etc. I hope you get what I mean. I just want to see what the most efficient design would be before I commit any user table to being the core of the system.