dilberts_left_nut wrote:...for huge runs of obvious spam, reporting every one just slows down the removal process a bit.
Point very well taken, and one I didn't fully appreciate until I was conscripted into the Purple Horde. The flip-side, of course, is that users who are trying to help by reporting spam don't know whether a given post (or posts) has already been reported--at least not without trying to report it.
My personal best suggestion is this: when in doubt, report. Multiple reports do slow things down a bit, but IMO too many is better than none at all.