The main reason for the LJ page is because lots of my friends have LJ pages, you have to post comments as "anonymous" if you don't also have an LJ account. (You can also use an "open ID", but I don't think Blogspot has an OID server, and many of my friends' LJ pages don't allow posts from OIDs anyway.) I also want to be able to see my friends' "friends only" postings.
Anyway, I expect to keep both blogs going. This one will be mostly for when I feel a need to comment on a news/product/whatever web page, since the "Blog This" button on my Google toolbar is incredibly convenient. I also plan on using this one for any long original works (like some of my commentary on the computer business or discussions on security systems.)
I plan on using the LJ page for more silly nonsense (like the "star trek character" poll) that will be of possible interest to my friends but of absolutely no interest to the world at large.
So now you know about it. Go create yet another bookmark.