I may be way out there here... but, the advice for gaining spammy links (in my opinion) is absolutely crazy and surely short sighted. If anything you should know about Google if it "works" today it won't work tomorrow. And anybody who has been a webmaster for more than a minute, will tell you it is NOT worth the short term ride...
I do agree however with carefully tailored, highly targeted specific key terms on specific sites as being helpful in your quest for better SERPS. I personally don't do it... anymore (because the spammy techniques I used before to build pretty good links, don't work anymore and it takes too much time and energy to build them the right way).
The problem with SEO is that people try and take short-cuts and then you NEED to take short-cuts to stay competitive... and then instead of focusing on your business/site/customers whatever, you are focusing on the next shortcut.
All that aside, my answer is to listen to Wheel... he seems to know what he's talking about.