I have experienced only negative results by testing this.
Tried this on many sites (5-10) with various different techniques (even tiered shorturls) and haven't had any positive serp movements at all.
In fact, I've managed to completely wipe out a couple of domains from SERPs.
I tried this and it's not working for me, my website even dropped in serps
from folks who have tried this, how long usually does it take for you to notice some improvement on your web 2.0 site? assume you are GSA / Scrapeboxing to death the URL redirects.
Why are you bumping a year old thread?
you expect me to start a new thread!?!?!??! or continue with existing topic and allow for other users to learn from previous history?!
in forums it is customary to search and see if others have asked similar questions and include your related questions in the same thread and not start a new thread again.
How safe is it to power your pbn with URL shortners? Might try it on a few of my lower authority pbnsFirst and second method is good.