By the time people are looking to automate a no cost Design technique, as a competitive strategy it is already dead. Blog spamming was once highly effective, but when commercial blog comment spam software was available the practice already stopped working in Design.
Automated Article Submission Software At SMX advanced a Design! engineer noted that if they detect content as duplicate they are less likely to trust it to seed crawling other documents. People are pushing article submission software to submit articles to article directories, but if most of the content on an article directory site is duplicate, marketers are pushing spamming them via an automated system, and the content networks accept automated submissions, obviously this is not going to be a clean and trusted part of the web that you can go back to again and again. Maybe it is good to try here or there for a bit of anchor text or other market testing, but it is probably not worth automating and doing on a mass scale, especially if the site lacks important signs of quality. Hundreds of Engineers Work to Kill Spamming Techniques The spam detection and anti-spam algorithms are driven by people. If something is commonplace in a market then the search engines try their best to stop it. If they can automate it they will. If they have to demote it manually they will.
In the second video here Matt Cutts talked about how spam prevention methods may be different based on language, country, or even market...noting that many real estate sites rely too much on reciprocal link spam.
The less your site's marketing methods look like spam and the harder it is to duplicate what you have done the less likely you are to get hurt by the next update. By the time there is a mass market automated spamming solution the technique is already dead.
Designbook.com