Is it possible to have META tags that Slashdot looks for in a story link before allowing it to be submitted/posted? Many times a server can't handle the load of a Slashdotting. So can the site have tags to prevent it from being added to a Slashdot story?

Not inconceivable, but I don't really think it's worth the work. Most of the sites that are Slashdotted are prepared for it, and the sites that get smashed usually are caught completely off guard; they wouldn't know of this mysterious opt-out meta tag. (See also Caching Slashdot Stories).

I also don't by this part there are all ready a option for this: "Pragma: nocache" that are used by many sites. If it is used the the should be a direct link to the site and if not use apaches proxy-function (mirror.slashodt.org/bla/bla/bla) mention erlier. This is what google use (afaik).

To say that you can setup and read apache documentation aren't the same as all people can do it. An nice prallell are driving a car, just because you can drice a car...

/EgU