Figure 5.15: Repeat of example Web graph 5.4 Link Spam 27. Exercise 5.4.1: In Section 5.4.2 we analyzed the spam farm of Fig. 5.16, where every supporting page links back to the target page. Repeat the analysis for a spam farm in which: a) Each supporting page links to itself instead of to the target page. b) Each supporting page links nowhere. c) Each supporting page links both to itself and to the target page. Target Page Accessible Own Pages Pages Inaccessible Pages Figure 5.16: The Web from the point of view of the link spammer