Welcome to WebmasterWorld Guest from 22.214.171.124
Can you think of any disadvantages with this?
It may suggest to some that you have something to hide! (Even if you don't).
The only downside of a public registration is that you get some additional junk mail and some unwanted phone calls.
In reality I get huge amounts of unwanted junk mail that didn't come from a domain registrations, and the phone calls are quickly dismissed.
In terms of e-mail contact, I'd have thought that most private registration services would simply forward any mail received at your private WHOIS e-mail address, meaning that anyone who wanted to send a mail to this address would still be able to get in touch with you; this is how the private registrations I have work and don't see it being too different elsewhere.