Now that I've pissed off any non-Chrome users around, I'll share with you a neat little tip I stumbled upon this morning by accident...
In the Chrome url/search bar, if you type in a popular website, then press Space, then enter a search term, it will perform an in-site search for you.
In fact, if you start typing the name of a popular website, then press Tab, it will complete the site AND allow you to perform an in-site search.
Detailed instructions below...
Step 1: Start typing name of a site, let's say, that shining Swedish champion of free internet... and porn.
Step 2: Press Tab (seriously it even tells you to on the right hand side)
Step 4: Results!