Bulk email

I`m yahoo mail user and I have probelm with some spamer or spamers. I allways recive a mail from somebody that it`s HTML graphis are hiperlinks thet lead me to http://something.cn/bosambeb/something. I`ve tried to block the addres but they allways arive from diferent one, and allways lead to the same place http://something.cn/bosambeb/something. How can I block this thing from anoing me. The HTML graphics by default are blocked in my mail so the spamer wont know have I opend the specifick mail. Please help. Excuse my english if there was some misspeling.
One of the answers: What line are they using that gets you to keep opening them? Just delete em. Details: The spamer can`t know have I opend the mail becouse I have blocked the HTML graphics by default in my account.

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