"Keyword dilution " and "Excessive cross-link"

[gilbert.imlay]

Hello friends,
Yesterday i listen about two words "Keyword dilution " and "Excessive cross-linking" can anyone tell me how i can define those words.
if you know then tell me.

thnx in advance

[tomfrederick]

keyword dilution is basically having too many keywords or key phrases written on the same Web page, independently if it’s on the homepage or anywhere else. Excessive crosslinking explained - and how I got a Yahoo! penalty lifted.

[gilbert.imlay]

thnx tomfrederick for giving nice reply.