I would be careful using this service. This service stores wallet addresses as DNS records and can potentially store many of them, making it a honeypot for hackers. Anyone who can gain access to the DNS records will be able to reroute transactions by changing the addresses of the aliases.
For people who already own a domain, you don’t need this service, since you can easily setup OpenAlias yourself by adding the necessary TXT records. That is all that this service does for you.
In other news: Jeff Bezos is now the richest person in the world.