>AWS free tier. S3+cloudfront has cost me $0.00 for the last year. This is incidentally the best price.
I haven't tried this setup, but I'm using Cloudflare to serve my static sites for $0.00 as well. My mini rails apps I've down to $6/month VPS that I'm happy enough with as well for anything a bit spicy.
I would do that but I dislike Cloudflare because they wanted by DNS as well. I keep my DNS / CDN separate. Too many eggs in one basket otherwise.