The halo effect is a cognitive bias that occurs when a person's positive or negative traits seem to "spill over" from one area of their personality to another in others' perceptions of them. (as defined by Wikipedia)
So, how does this apply in the world of Search Engine Marketing?
It's no secret that it takes more time to get a top ranking in Google than in MSN and Yahoo. Yahoo and MSN tend to allow newer sites top rankings within weeks, while Google will make a new site wait - this is done to prevent spammers from hogging up the top rankings through massive link campaigns.
So, the SEO halo effect takes place when your site gets it's first top ranking. It seems that when your site achieves the much sought after #1 ranking for a popular keyword or phrase, to get the next ones are easier.
Case and point:
For my site, SEO for Google, that was the exact phrase I was optimizing for when the site was first launched in January 2005. I spent four months submitting to directories, writing and posting articles every two weeks, and I made sure I posted to my blog at least 5 times a week.
I knew I had to do all of this to overcome the "sandbox" that Google would place the site into. And in April of 2005, the site finally came "out of the box" and the phrase "SEO for Google" had the site somewhere around the 30's. It took another month's worth of focused effort to get phrase to the top spot.
Finally! after five months of continual effort, about 1,200 directory submissions, and article postings, all based on the key phrase "SEO for Google", the efforts paid off.
But, now the challenge was to expand on other phrases that people would enter to find out information on search engine optimization for Google. So, after using Wordtracker, I found nine more phrases to pursue:
