This is a great (and short) blog post by Seth Godin on the topic of being accessible and making it easy for people to initially contact you.  Think about the last time you wanted information or were looking to buy something.  Did you want to answer a bunch of questions or provide a lot of information about yourself?

Email contact is like a first date. If you show up with a clipboard and
a questionnaire, it's not going to go well, I'm afraid. The object is
to earn permission to respond.

Keep it simple.  Request an email address or make it easy for people to send you an email with some questions (and be sure to respond quickly!).  This is just the beginning of the discussion not the end.