Contextual ads, such as the ones served by Google's Adsense, can produce a few extra bucks per month, or even cover a couple of bills if your site has a lot of traffic. However, if your website business model is based on offering your company's products and services, then you are probably better off without contextual ads.

Link building is the most time consuming task in online marketing because it is the most important of your external factors and you can never have “too many” inbound links. Aside from a discussion on link quality, it is always good to have plenty of inbound links and to continue obtaining more throughout the life of your site.