Yes is the short answer. Any time you are planing on generating money, you should have a plan. No plan means no real focus. There may be some 1/1000 percent of a chance you will succeed, but I haven't met them yet. If you have already started and have generated an income, record how. Doing so will give you material for use in expanding your business faster.
I made this critical mistake on my first 5 affiliate websites. Whenever I think of email marketing, I instantly get flash backs to all of the spam I’ve had pile up in my inbox over the years. From male enhancement drugs to free vacations and even millions of dollars in some country I’ve never heard of from my long-lost uncle, we are all familiar with SPAM.
It’s also a really bad idea to rely solely on search engine traffic for your business. Google and other search engines like Bing and Yahoo change their search algorithms frequently. Many small online business owners have seen their affiliate business destroyed due to fluctuating search rankings. With so many possible traffic sources, never rely on just one.
Thanks for a nice job. I am currently promoting some of the affiliate programs listed here and making a few dollars from them. But I must say that making money from affiliate programs is not rocket science; it requires hard work and perseverance. Affiliate marketing keeps evolving daily and any serious affiliate should be ready to change tactics and invest time and money in order to beat the competition.