[SURBL-Discuss] Spam dispersed across multiple messages

Has anyone seen any spams that use two (or more) messages to catch the recipient's eye?

E.g.: The first message has cutesy CSS-obfuscated text and maybe a graphic or two, and informs/commands the user to watch for the follow-up email from the same person and with a certain given catchphrase in the subject line

The second followup message that arrives a minute or two later is perhaps marked with an identical From: name (but not an identical from address), and perhaps the prophesied catchphrase in the subject line. The payload (a URL or phone number or whatever), would be in the body or even subject line of the email message.

Comments?