I read an interesting article that confirms mainstream thinking about what SEO does for your website:

If a website doesn’t appear on the first page of a persons search –

will they continue to look for it?

According to a JD Power Study – Survey Says – NO –

or 85% will not continue the search on page 2, while only 15% will.

When monitoring web traffic and click through rates, having your website optimized with great quality and attention put into each page will increase the organic placement and funnel more web intenders to your site because you are MORE VISIBLE.

Search Engine Visibility may be the better word to refer to this – if you are not VISIBLE the chance is only 15% of the buyers will continue to look for you.