I need to post my clients testimonials in superpages, etc, do I need to hide my IP for this as there will be multiple clients, (different user names) I will be posting for from the same computer, and what would the best solution be, I tried hotspot, but someone on this forum or Warrior Forum said it allowed rootkit infiltration, thanks!

It depends on where you are submitting the testimonails to.
If it's a site that you are affiliate with, there should be no reason to change IPs etc.

Otherwise, download and install TOR, it's free and open source.
After each testimonail clear cookies and cache, and restart TOR, to get a new IP and reduce your footprint.