exonize

Hello, I'm interested in the Blogging theme and had a few questions. 1) Is it possible to make the navigation bar in top sticky? 2) I see there is both Wordpress comments and Facebook comments, is it possible to only have Facebook comments? (will it look good, or will it require additional changes?) 3) What font is used in the "Blogging" logo? 4) Can I easily remove the top slider on the frontpage?