In the current iteration, I'd say this isn't a usable UI. As a first time visitor, I'd have no idea what I'm supposed to do or what anything on the page means.

In the current iteration, I'd say this isn't a usable UI. As a first time visitor, I'd have no idea what I'm supposed to do or what anything on the page means. The form field is somewhat of a mess because of the placeholders and you need to change the ..: Search :.. button. Make it a prominent and obvious call to action button. Also, make sure the form field itself is responsive like the rest of the page so it doesn't get cut off when I resize the browser. I have no idea what any of the things below the form field are so I can't comment on that. As for positives... I like the ASCII picture of Isaac Newton in the source. This needs a lot of work, but everything starts somewhere.