Between new items, renewed items, and renew sold items, I probably list 8-10 things a day (more if I sell a lot :)) I list at least 2 brand new things every day. I do notice it does help with views, but if I go one day without listing as much, views aren't impacted greatly right away, but if it's a few days, then yeah, I can tell. :) :)
Cheers!
Rachel