Wunderlinks is a great idea in practice. In execution, it's not great.

Here are my two big.issues:
- Many of the links Wunderlinks provides are from unconfirmed Gmail addresses. This makes reaching out something of a gamble
- The organization of the links are confusing and often repeats itself. Certain site categories have three or four repetitions

There are some links in there worth finding. But the time wasted needing to dig through all the poor links isn't worth it. I can't recommend to anyone looking for back linking support.