We review the progress ofour research on Web Graphs. A Web Graph is a directed graph whose nodes are Web pages and whose edges are hyperlinks between pages. Many people use bookmarks and pages oflinks as a knowledge on internet. We developed a visualization system ofW eb Graphs. It is a system for construction and analysis of Web graphs. For constructing and analysis oflarge graphs, the SVD (Singular Value Decomposition) ofthe adjacency matrix ofthe graph is used. The experimental application ofthe system yield some discovery that are unforseen by other approach. The scree plots of the singular values ofthe adjacency matrix is introduced and confirmed that can be used as a measure to evaluate the Web space.