TO GET THE OFFER:
1. Complete a health insurance quote and enter a VALID email (fake phone number)
2. Wait 1 day and receive an email with a $100 offer
Must hold the policy for 45 days to be eligible for the gift card.
As detailed in this deal (and the comments thereof) you may be able to change the couponid in the url from 155 to 157 and get a $200 gift card for combined hospital and extras deal instead.
If you stop reading after the word 'Hospital' it doesn't sound like a very good deal.