If you're looking to build social signals, the best way to do it is to use Twitter.
Getting social signals on Twitter is fairly easy.
You can get on Fiverr and there are all sorts of vendors selling social signals from that platform.
With that said, I suggest that you pay close attention to the vendors offering this service.
Some offer realistic-looking profiles.
They are also using aged accounts.
You should go with those Twitter service providers.
The key here is to make your signals look as natural as possible.
It's really hard to do this if the signals are coming from accounts that look obviously fake.
Also, pay attention to the overall footprint that you are creating.
It doesn't look all that natural when you get a huge burst of social signals and then everything dies.
If anything, you're looking for something that is erratic and which tracks the overall activity of your blog.
For example, if you just publish a hot new blog post, then it would be logical for that blog post to get a nice burst of
signals from Twitter.
After a few days' passes, the activity dies off until you post another piece of content.
I hope you see where I'm coming from.
It's all about looking natural and it's all about mimicking actual social media user behavior.