People who aren't even members and wish to scam people can and do scan members pages for email addresses, phone numbers, etc. We suggest not putting any identifiable information on your page for this reason.
The only thing a non member cannot do on here is post a blog or see who is active on the site. Everything else is viewable to them.
At least on facebook you can choose who you allow to view your information and yet, who puts their email address or phone number on facebook page unless they're a business?
This is the internet. Be wise.