7. BugMeNot
If the web has more of anything these days (besides, you know, that), it's sites with login requirements. If you just want to check out a service or read that regrettably registration-required article, BugMeNot is your one-stop shop for borrowed free web site logins. Click the bookmarklet to fill out a user-submitted site's username and password fields. BugMeNot's been around for a long time, and it's hard to find a site not covered by its helpful submitters (Original post).
When you want to search within a particular web site which doesn't offer its own search engine (or the one it does turns up less than useful results), you want to use Google to search within that site. We use the 
