Maybe you don’t even know what Search Engine Optimization (SEO) is? Search Engines are the first place that nearly everyone goes when looking for something. Having your site displayed at the top of results for relevant searches is a powerful way to get visitors to your website. In a sense it’s a way to provide free traffic to your site. Also because when people search, they are usually looking for a specific thing being and able to provide it to them you are gaining a relevant visitor.
Clipping is a handy way to collect important slides you want to go back to later.