When I was at the SCBWI Springmingle conference this past weekend, I told my new writer friends that I had a blog. Many of them said, "You know, I thought about starting a blog. But I have no idea what to say every day." So I told them how I talk about YA and MG mysteries, and just general interesting stuff I come across.
But the real secret to blogging is to surround yourself with people who are smarter than you, so you can say, "What (s)he said." Some of that cleverness rubs off on you, I swear.