Post edited 5:18 am – November 29, 2014 by colormefrugal
After I wrote this I spent some time trying to figure out both Stumbleupon and Reddit. I've now been submitting one post a day to SU. So far I think it's been a success- over the course of the last couple weeks I've been averaging 20-25 views a day from SU. And it's been increasing- I had over 50 one day this week. I have also added an SU button to my site, but I think that most of the traffic I'm getting has been from submitting my articles to their site.
As far as I can tell, SU is it's own content platform, containing only articles that have been submitted to SU. So if no one has ever submitted your articles, they will never be "stumbled upon." You get traffic from SU once someone (it can be anyone, does not have to be the author) has submitted your articles and others like them- the more likes, the more it will be shown to other stumblers.
Reddit is a completely different animal- despite also spending some time trying to build my "karma" there, I'm considering giving up soon. I have yet to receive any traffic from Reddit, despite trying hard to play by their rules so as not to be labeled as a spammer.