Absolutely LOVE your header.
But your sidebar is too busy. I personally don't think the
"Google Connect" adds anything to blogs, but that's my personal
opinion.
What your sidebar really needs is the methods for people to
follow you via your e-mail newsletter or RSS feed, at the top of
the sidebar, as you have it.
Next should be a list of recent posts and your topics. I
just think you have way too much going on in your sidebar and as a
result, important things like "recent posts" are far too small and
therefore, not likely to get attention.
You can get an idea of what I mean by looking at my
website:
http://homeschooling911.com/blog/
Part of the problem might be your theme. I use Headway,
which is a paid theme. But there are many free themes that
are good - or so I've heard! I had no luck with the free
themes which is why I went with Headway.
In any case, lose some of the stuff on the sidebar and make your
recent posts and maybe your popular posts much more prominent.
Well, that's my advice anyway! Good luck!