We have provided a list of high-quality Social Network sites you can build links. We have carefully selected the following sites, and included High DA, with low Spam Scores that are indexable and crawlable. With link building, it's always to target websites that are relevant to your industry, but you can target general sites too.
NOTE
Remember, you cannot just build a link and leave it there. Google WILL ignore your link, your account must be active, try posting at least 2 times per month to have the link indexed properly by Google.