Anonymous FTP Alternative

["Mogren, Jack L." <mogren () mayo edu>]

  We are looking for an alternative to the use of an anonymous FTP server.  One alternative I envision would allow some 
sort of loose self-registration by individuals.  I'm thinking that they would be prompted for a username/password.  
Individuals would need to register by entering their email address as the username.  Then we'd email them with a 
password.  If it's a valid email address .............. You get the idea.  Has anyone had experience with anything like 
this?