How do spammers harvest email addresses

Actually this post i catch from http://www.private.org.il/harvest.htmlreason why i grab in here because i’m weak for remember original address, so i’am copy to my blog if sometimes i have this problem.Credit for Uri RazThere are many ways in which spammers can get your email address. The ones I know of are : From posts to UseNet with your email address. Spammers regularily scan UseNet for email