Introducing a new service: mail forwarding from your_jid@jabberd.eu to your_real_registration_mail@something.com, so you don't have to post your JID and email to anybody, just give him your_jid@jabberd.eu all mail would be forwarded to your registration email.
You can enable/disable service via user bot@jabberd.eu, drop him a message via your favorite IM to get some help.
