Anyone else using cashback programs to save on purchase, renewal and transfer costs?

Is anyone else using cashback programs to save on costs?

I'm using:

• topcashback.co.uk (and its .com version > topcashback.com) when purchasing from GoDaddy and NameCheap
  For GoDaddy I'm getting 15.75% cashback (yes, it works for DDC too ).
  For NameCheap I'm also getting 15.75% cashback but I've…

Anyone else using cashback programs to save on purchase, renewal and transfer costs?