First it can waste a good deal of time. More important, you may end up being blocked from good advertising sites. The question is when. Backing up critical work is a must. Here is the most practical, common sense approach I've seen in print.
Nobody benefits from it.
Here, Bob explains how the pros send spam in complete safety. And what little one can do, really, to put an end to the stuff. He wraps, though, with a neat trick for decreasing spam in your in-box. Offers insights into why people are hesitant to ask anything at all, and how best to respond. Here are the ratios upon which you need to focus.