google xml sitemaps, feedburner, and google analytics

do you think it is necessary and/or beneficial to add/use
google xml sitemaps, feedburner, and google analytics?
what are your thoughts/opinions on using these on wordpress blog/site?

In my opinion every step you take towards better SEO counts. Google sitemap and analytics definately counts, google generally likes if you use their products. Only avoid analytics if you are doing black hat SEO or something google doesn't like, since then it is a troyan horse behind your city's walls... Using feedburner also only takes a few clicks, so I would use it too. Every little bit counts.