Don’t be phony! Be yourself — it’s what your social network friends added you for. There are, of course, many ways to “game” just about every social media system, to get more diggs, to appear to have more followers, to get your posts Stumbled, and so on. But in the end, it’s an empty gain — people who follow you because you appear to be something you’re not will quickly un-follow you, people who end up at your site because you managed to get more votes on a post than you deserve will leave without reading, and all you’ll have is an empty number to show off.
Signing up for social networking sites and social news sites is easy, but unless you’re willing to put in some work, you won’t get much out of it. You need to keep your profile reasonably up-to-date, maintain at least a marginally active presence, and talk to other people now and again to make it work.