There are quite a few ways to get backlinks, but unmoderated guestbooks are often overlooked or thought of as an ancient link building method.  Believe it or not, guestbooks are still around and many of them have the cherished pagerank so many webmasters seek.

First, the key to discovering guestbooks is to look for a search operator that will help you find plenty of them.  Searching for “sign guestbook” at Google will return a large list of guestbooks.  Or a search of “guestbook.html” will also return a list of guestbooks once you get past the first page.  For most, it’s probably easier to search for specific guestbook scripts (ones known to not be moderated).  Below are some search phrases I used.