Limiting the Number of Links on a Page
According to the “Google Information for Webmasters,” it is inadvisable to have more than 100 links on a particular page. The guidelines specifically state, “Keep the links on a given page to a reasonable number (fewer than 100).” The reason behind this is that link farms and other spamming sites use many links on their pages. If you have a legitimate page that actually has more than 100 links, such as the site map of wa large website, you should consider breaking it up into two or more smaller pages instead. This should help you avoid unnecessary loss of ranking.