Just for visiting our site we collect a minimal amount of non-identifying information about you like what country you are coming from, are you using Internet Explorer or FireFox, etc… and other minutiae and so on as to aid us in improving our service. If we choose to share any of this information with anyone it will only be shared in the form of non-identifying statistics.
It is worth mentioning however that the internet, and especially email in and of itself is generally not secure. Generally speaking when you send an email to anyone over the internet or use a contact form about anything, advanced human beings with even not so advanced computers can read everything you write if they so want. So if you have information that is so sensitive that it would be catastrophic if someone untrusted got a hold of it, then you should not be sending this information over the internet anyway. This warning is more to make you aware so you will at least think about it next time before you send the location of the buried treasure to your best friend over email.