When we adopted our dog, last September, he was microchipped and registered with HomeAgain.com.
I just got a renewal notice saying that the dog is microchipped, but if I pay an additional $18/year, they will help find the dog with posters and alert vets and shelters if the dog gets lost. In addition, I get 24 hour access to an emergency medical information line and anytime access to a “Pet Recovery Counselor”. I did not renew. As long as the dog is microchipped with our contact information, I don’t need the additional services.