Key Word Density

i wanted to know that is it logical to use one sigle keyword for everthing which search engine give preference... for exampleThe page title : Travel AgentH1 is Travel Agent H2 is Travel AgentB is Travel Agentand link text of all the pages pointing toward this page is also Travel Agentmeans Travel Agent Is it logical

Looks like work of an Amateur. Can't really say that it will work but avoid using spamming tech like this. Sometimes websites do good using these tech on some search engines byt sooner or later they r penalised.