The goal of Tor2web is to allow internet exposure of Tor Hidden Services.
This is achieved by operating a trade off between the clients anonymity in exchange for usability and impact.
Tor2web continues to provide anonymity for publishers, but provides non for clients. By doing so publishers are able to reach a much wider audience and not need to require the user to run a Tor client.
Tor Hidden Services can be setup quite easily and they offer the great advantage to the runner of the service to not need to buy a server, register an ip address or a domain name.