Search Engine Optimization, also known as “SEO” is an excellent thing to do.
You can tweak your websites, or even your mini-site sales pages, and squeeze pages so that they are picked up more readily by the Search Engines such as Google.
This means you are in a sense getting free advertising.
SEO works best if you are in a “niche” that is not too heavily populated.
One of the tricks to SEO is to establish yourself with something called “Long Tail Keywords” like “howtoplaygolf” or ‘loseweightwitheating’ for example.
There has been a lot written about SEO and you will have no problem finding out a lot of the simple ways you can get those higher search rankings.