I hope you don't actually need convincing that organic search engine optimization works. But just in case, here is a "top ten" list that should do the heavy lifting for me.
#10 – Nearly 250 millions searches are performed per day. Just on Google!
#9 – A high search rank = be found 24/7/365
#8 – Organic search results represent 85% of all clicks. Opposed to only 15% for paid listings
#6 – Online marketing currently at 7.6% of all media advertising spending is projected to be at 15.2% in 2013.
#5 – $25B of ad spending is leaving print media and other traditional media and going to internet marketing. Switch before you competitors do!
#4 – 39% of all businesses are paying for SEO, up from 19% in 2007.
#3 – 8 out of 10 people find the company they do business with online via search or social recommendations - which play into SERPS.
#2 – You are there when THEY are looking! It's always easier to get a new customer when they seek YOU out.
#1 - By far best return on investment! Hardly anyone searchs when they aren't in the market. Only target people who are ready to buy.
That should have done the job. If it didn't please, please call me and I can give you example after example of how SEO has help my clients achieve growth and sales goals. I work around the clock so don't hesitate to call 615-429-1986