Google webquotes lets you see what other sites say about each of Google’s search results. This is such a useful feature to me (at no incremental pain) that I see no reason to ever Google without webquotes! (Google also has Google viewer, which to me is far less useful. And while you’re at it, may as well check Google’s extensive resource for webmasters) via Kiruba
Google webquotes
I find Google Webquotes incredibly useful because it shows what other sites say about specific search results. It adds significant value to my search experience with no extra effort, making it my preferred way to use Google.