Ugghh it makes me shudder. About 10 years ago this would have worked.
All I can say is "DON'T DO IT"
and it bears repeating
"DON'T DO IT"
There are more ways to get your site penalized than there are to get it to rank well.
Do not make links for the sake of links.
Recently Dejan SEO, a highly respected site and person heading it got their domain penalized by a manual action due to some old link building tactics - which were better than forum posting for links, that bit them.
It was also super cool of them to share their journey and the results. They got their penalty lifted.
Building bad back links can cause your business serious harm - do not hire any SEO person or company that engages in these tactics and certainly don't pay for an automated tool to do it for you.