What's the difference between SMO and SMM

Some people like to refer to the creation of social content as SMM. While I agree somewhat, I think there is a fine line. You see, like SEO, SMO is an ongoing process. It's about making your site' "distributable" to the social web, which includes creating socially interesting content on your site.

Having said this, SMM on the other hand is similar in concept (creating compelling content) but the difference is that the content usually has a marketing angle - at least in the business sense - and it generally happens off-site. The best way to describe SMM is to compare it to viral marketing; create something that gains a lot of interest and that gets spread to other users quickly.