Indeed - my mistake on the caption - it should say "Figure 3: New Database Mail Account". I'll get that changed.
In the "Review the Database Mail Logs", I think msdb..sysmail_event_system should be msdb..sysmail_event_log (At least it appears that way in my SQL 2005 and SQL 2008 R2 instances.)
Yes, looks like an editing error, it absolutely should say sysmail_event_log.
Thanks for pointing these out!