I went through the profile list looking for people that might live near me so we can exchange aviation things over the phone.
To my surprise not many people fill in and complete the information in their profile.
Do they have something to hide ? or don't they really care.
I think the main reason may be that the spam merchants are known to auto search forums, sites, guest books, etc, etc for mail addresses and phone numbers. I note that your own profile information is quite sparse for which you may have quite a legitimate reason.