Auto Social Backlink Builder is a plugin that can help you publish your blog posts with backlink to all your configured social networks automatically.
Here they shows it is free nut after installation you will found only one link (https://delicious.com/) and for more option they just need money so don't install it.
apart from this they have less link builder
It very useful and you may want to check this STRATEGIES for building backlink . It have me a lot and today it FREE for you
It's easy to use and can automatically submit the my published posts to the configured social networks, it is great!
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