Safari Tweaks

I'm sure there's been plenty of threads on this already, but I've searched as best I could and couldn't find anything specifically about this.

I really like Safari but a couple of things bug me (well, things I'm used to having in Firefox).

First of all, is there a way to make Safari do certain things with different prefixes typed in the address bar? For example, in Firefox, you can type "wikipedia Apple" and it will bring you to the Wikipedia page for Apple. Or you can type "macrumors" and it'll bring you to MacRumors.

Edit: SafariStand should be able to do this for me, right?

Another really minor thing that bugs me...sometimes the orange back arrow appears in the search bar, but I'd rather the "x" is always there. Is there a way to disable that?
You're probably wondering why that bugs me...it just does.