Page Chapter 6. Working with Users, Page 68

Location on the page: 
Last code example
Error: 

function hide_profile_alter(&$account, &$fields) {

Correction: 

function blog_profile_alter(&$account, &$fields) {

Description of the Error: 

Change hide_profile_alter to blog_profile_alter. Since we are nominally working with the blog module, the hook_profile_alter() should reflect this.

[No! By implication we are working with the hide.module. We do not tromp on core module namespaces. -JV]