Here is their Mission Statement:
We are a Rapture-proof service that will ensure that your youngest family members will be given the religious instruction that you would have wanted them to receive. More than just letting your rapture-orphaned sons and daughters [know] that you love them, we will witness to them so that they too may be Saved and reunited with you at the end of the Trials and Tribulations.
This is based on biblical verses that state that we are all born in sin and that we have to reach the age of reason before we can be saved. The site goes into detail on the home page explaining why your baby is born an atheist and isn't guaranteed to be raptured.
The problem seems to be that the children christians will leave behind will then be taken in as wards of the state, and then might be marked with the sign of the beast. This service will take the child before that stage and make sure they are never marked, which would be a bad thing according to Revelations 20:4.
On their order page, you can donate to help support the cause or buy the Soul Survivors Program, which is their basic package, and offers a guarantee to witness to a single family member as soon as they approach the age of reason (age 4-5). They include a personal message that you can include in that package. They also have an Extended Package and an Omega Program as well, which is $1 million dollars per 7 year term. (30 day trial for only $4,995!)
If you click on the buy button for the Omega Program, it doesn't take your money. It goes to a page titled "Why are we so sure you are wrong?" This page is linked to several times throughout the site as an attempt to show the light of reason to true believers.
They do promise to fulfill their commitments for the other programs, though and explain in detail on the Mission Statement page how the service works.
So I thought I'd share it with you. For your True Believer friends and family, maybe you can let them know about it.