I initially stayed away from any offer that required you to sign up for another offer to get credit. Most of the offers-within the-offers either cost something, or required a lot of your personal information and said that someone would be contacting me. But there were a lot of highly rated offers that had that requirement. So I decided to try one.
I was pleasantly surprised at what I found. At least one of the offers-within-an-offer would only required an email address. I didn't mind getting an email from that company, so I went ahead with it.
It turned out that most of the time, there would be a least one offer-within-an-offer that only required an email address. This opened up a LOT more offers for me to fill out when I discovered this fact.

