don't show delete links when viewing another user's microposts
user/relationship associations
Validations
Followed users
ch 11.1.5: Followers
Ch 11.2.2 Stats and a follow form
Ch 11.2.3 Following and followers pages
Ch 11.2.4 A working follow button the non-AJAX way
Ch 11.2.5 A working follow button with Ajax
Ch 11.3.2 A first feed implementation
Ch 11.3.3 Subselects