Tensile strength: Spider web & Steel

Suddenly thoughts about the strength of spider web struck me and I was wondering if it might be stronger than steel... I thought sure someone must have went through this already and started google it. And I was not wrong, there were some researches and this one is a nice article I found....

(Update: sorry guys I removed the link since I dont know what kind of copyright is attached with it... Please search for the keywords in google and you might stumble on it..)