Good guess, Meriadoc. "To be slashdotted" (or "the slashdot effect") refers to a site being linked from slashdot.org AND subsequently being so swamped by traffic as to become unavailable.

You'll sometimes see a comment on slashdot saying "Slashdotted. Mirror available at [url]."

Members of the slashdot.org community sometimes joke about wishing slashdot could have the same effect on sites they hate as it does on sites they love.