In this episode, in order to distract Lily from labor pain, Ted tells Lily the story of the time Robin went to second base with a man she thought was Neil Young. However, in Season 5 Episode 7: The Rough Patch, Robin says that Neil Young is her favorite musician. It is unlikely she would make this mistake.
Ted says that he has an awesome birth email but there's a url at the top o the page showing its a website not an email.