A few other bloggers out there have already mentioned this, so you may have come across it, but there is a new list of "Top" wine blogs and sites for your perusal.
Check out wine.alltop.com
I won't brag about my inclusion as I admit I sent a begging letter to have my site added (no shame!), nor will I mention where you can find me as the list moves about as more sites are added.
However, as a place to start your exploration of wine content online you could definitely learn a lot from this list of sites (and a pretty cool layout, too).