Search engine result page hijacking

Recently, I came across an article in slashdot about the 302 page hijacking, I was not aware of this before until I try to search my name on yahoo! link It seems that such page hijacking is evolved to another generation. Instead of redirecting you to another page which the end-user will get annoyed and notice that there is something wrong, they show you an advertisment, while the page still look legitimate. Why would the spammer choose my page?

1. My page rank is low and it is easier for them to convince the search engine that their page is more authoratative than my personal page hosted in UCLA
2. My page is popular and there is commerical value showing ads :D

If you read this message, please create a link to my legitimate page (http://oak.cs.ucla.edu/~sia) so that my page won't be hijacked by the spammers, thanks.