Are you listed in The Blog Guidebook? It's a great resource I found a few weeks ago but only recently had a chance to explore more. They will list your blog for free and there are TONS of categories. There are also sponsorship opportunities with prices that seem pretty reasonable.
For a limited time, you can get a free upgrade. Your button (blog badge) listed on their site for free -- normally a $20 value! Go to The Blog Guidebook and do some exploring.