You don't get sued by mail (Score 3, Interesting)

You've got to be served by a constable or other officer of the court. You can't just file a suit, mail it out and collect a judgement when the defendant fails to show up. That being said, if you are sued, even if you are completely innocent of everything, it'll most likely cost 10-15k to prove that - and it's 50-50 whether you'll get that money back. That's only if you never go to trial. If you got to trial it'll be more like 50k. If it's inter-state more like 100k. That's why so many suits are settled and why the little guy generally loses unless he's got a brother who is an attorney.