For my fashion blog I've been working at contacting a number of fashion and beauty bloggers to start this weekly networking post series. The concept is fairly easy to understand and operate and it is a great way to both network and drive traffic to our blogs. I've got a whole bunch of bloggers that I would LOVE to be involved in the movement but the trouble is I can't find their e-mail addresses anywhere! (Ok it's not really a movement but I can't think of a better name for it.)
To me, it is crucial that you give people a way to contact you on the blog. And, more importantly, it needs to be easy for them to find that contact information. If it is buried on the bottom sidebar under all your key words, previous blog posts, and blog roll readers/advertisers/fellow bloggers will likely give up before getting that far.
If possible, the contact information should be at the top of the homepage. Maybe make a "Contact Me' gadget or blog page. Maybe put your e-mail address and Twitter handle as the first two things on the sidebar. But however you do it, you need to make it nearly impossible for someone to miss it.