Search Engine Forums, SEO Forum

Yes, and by increasing visibility of your website in search engine you can have your targeting visitors towards your website. And then if they find your website useful and informative then those visiotrs can become your clients and can improve earnings of your business. So, indirectly SEO is to increase your business online.

There are lots of SEO techniques available like Edu blog commenting,Forum profiling,Directory submission,QnA,Video creation and lots more but I found Forum posting is very advantageous work to do.