When I was in college, I thought it was cool to have multiple email addresses; at a time when most people didn’t have 1 address, I had at least two, so I put them in my email signature, along with my website and phone number.
These days, people have Facebook pages, LinkedIn page, Twitter address, blog, Flicker account, Google+, Skype, Email, etc. Up until today, I had never seen anyone list all these “contact” methods. Is it really necessary for anyone to list these? These days, I think if someone wants to contact you, they can find you without you explicitly telling them.
I use a work email address, a personal email address, and this blog. I’m a pretty easy person to find (it doesn’t hurt that I have my own domain and my last unique isn’t all that common).