Powerful site-wide search
Yes, you can use site: with Google to search a specific website. But you can't search the entire source, or show pages which *don't* contain something. For example, you may want to search your website for pages that don't contain your Google Analytics code.
Scrutiny's site search has some powerful options.
The usual options that you've set up in your site config apply to the crawl: Blacklisting / whitelisting of pages, link and level limits and lots of other options, including authentication.
Here's where you enter your search term (or search terms - you can search for multiple terms at once, the results will have a column showing which term(s) were found on the page).
There's a 'reverse' button so that you can see pages that *don't* contain your term. Your search term can be a regular expression (Regex) if you want to match a pattern. You can search the source or the visible text.
The search dialog above now has a friendly warning which informs you if you're searching body text and if you've got some of these exclusions switched on.