mack - 11:19 pm on Jan 21, 2013 (gmt 0)
A quick and simple form should pose no issues to the user. It can be as simple as [your name], [email address] and [message]. It also acts as a call to action.
An email address on a page causes more confusion and requires more steps. The user then needs to login to their email and compose.
Mailto links are even worse if the user uses web mail.