excellent - well you asked for this...
turn gzip on via tsohost, will compress the website and reduce your bandwidth.
no rss feed? that's because you aren't using wordpress to post news or similiar items, so the rss feed doesn't work. Have a news page, post some news, you then get rss feed to use...
use the wp-supercache plugin, you get a speed increase and you can configure a mobile theme as a free bonus!
permalinks - you haven't changed them...change them as you get better seo and more readable and distributable page url's, it's in settings>permalinks
+1 for the video's not autplaying, and maybe a welcome page to set up the website rather than diving into videos?
use sitemap-xml plugin...helps search engines find you and as a bonus submits the site to google, ask, bing (though you're indexed already by them...)
remove the testing tweet...
when you remove the player, your first post has a link to the admin login page...
there are a multitude of plugins I feel you should install...just ask and I shall post...