Ok, I know you are all reading Mockingjay, but I thought this was as good a time as any to share my favorite link of the month.
Weronika Janczuk is a new agent over at D4EO Literary. She has a super fast turn around time (less than 12 hours) and a feature called "Ask Weronika".
Last week, someone asked her about online presence and Weronika broke it down into categories and levels. (Unpublished/unagented author to published author.) She also talked about what she expected to see, as well as how often to update (or not) and how to handle it so your online presence doesn't look neglected.
It's a great post. I highly recommend it.