Just got an email from Tivo (email@example.com) that seems legit, but also too good to be true. " As a former TiVo customer, you're eligible for an exclusive offer: For just $49 you can sign up for a special One-Time Service Extension plan and never pay another cent for TiVo service. Take advantage of this amazing, limited-time offer today! The One-Time Service Extension plan only applies to the DVR for which it was purchased. It cannot be transferred to another DVR. Call 1-877-367-8486 today and mention the One-Time Service Extension offer. Thank you, and we look forward to you returning to the TiVo family." Am I reading this right? Lifetime service for only $49? And if it is legit, how exactly does Lifetime work? What happens if the DVR needs to be replaced? What if I upgrade?