That's exactly why I was a bit sceptic at first when Listnerds was announced and why I didn't join immediately.
Same here - in fact, I at first thought Listnerds was an incentivized version of something like Mailchimp - a regular email service provider + rewards! I don't know how many people currently use Listnerds but I thought I would give it a try rather than guess about it from the outside :)
Yes, well I didn't have any experience myself and what works best for me is simply do it and experience it. The system sure has hiccups and things that need to be improved but I know this will be worked on in the future. So far, I can only say I'm happy I tried. It has changed my personal view of this industry completely. I've probably been the odd one out by what I've been sharing in emails, but I'm just going to keep doing what I do and along the way learn some more things that can help me improve.