I think an awful lot of people who advertise on Reddit just don't know much about advertising, but often think they do. For example, I followed the link to /r/selfserve and saw someone complaining: "$100 for 13,000 impressions is a rip off. I've been advertising for years online and this is lowest I've seen by a mile" and following up with a comment saying "$100 buys 150k impressions anywhere else". At that price you…
> wasn't optimistic that it could give good results. That's what it came down to for me, I'm not optimistic that I'll ever get great results spending $30 a day advertising a $2 app to Redditors. But yes, the $30 / 1 day data isn't large enough to draw any real conclusions.
It's your business and one primary reason you are where you are is that you've used your "nose for business" along the way to make judgments - judgments, I'm sure, that in many cases could be classified as "Not enough data to make a conclusion" yet you made a conclusion, were right, and here we are. If you think that the data tells you that it's not a worthwhile place to advertise, then go with that. The statisticians and internet commenters with nothing at stake will always ask for "proof" (in terms of trial runs, # of impressions, 30 days, etc) but never forget that you are where you are because of your decision making ability...
And just to be clear, I'm not trying to disrespect/discredit/etc corin_'s comment - mine is just a general comment meant to say that "educated intuition" is just fine when you are a business person running a very small business.