Disclaimer: I work on the product. I think it'd be pretty useful for startups to gauge the market.
In terms of customer discovery and problem identification, absolutely nothing beats interviews. Surveys may have their place when it comes to getting demographic information or validating a market size, but interviews should not be replaced with surveys.
If you do this, make sure to validate your psychographics and demographics. You will also want to validate your responses with people you've identified in your psychographics and demographics. In other words, make sure the data you are getting is actually valid data and not coming from some 12 year old playing with his mom's phone. :)
1. http://www.behind-the-enemy-lines.com/2010/03/new-demographi...
Is there a way to find initial customers in a scalable manner? i.e. scaling it across many different business ideas and potential customers?
This would be a great service that a lot of people would pay for. I know, I know, I'm asking for marketing to be commoditized and turned into a service, which is hard. I don't really know how to do it.
(I don't work for them and haven't used them, but it sounds like they're doing exactly the thing you're looking for.)
My understanding was that their use-case was if you wanted to scale out sales on a product for which you have already identified need, price, customer profile, etc.
For example, I would love to interview PR professionals. Compared to parents, I would venture a guess that they're much harder to find on MT. I wonder if Facebook ads would work better.
There are three big issues with using MTurk for business research. You can't do much to refine who you get as respondents, the respondents are incentivized to complete the task without regard for the effect on your data, and you have restrictions on what you can do due to the anonymity rules.
If you're following the way of the niche, MTurk may be too problematic compared to just slogging through some cold calls. The benefit for more broadly targeted projects is that it lets you grab a large sample size with fairly low effort.
(Speaking of which, if you are an entrepreneur or an early employee at a startup (like <= employee 3), I'd love your feedback via a quick survey! http://www.surveymonkey.com/s/F7W9P5P )
Right now amazon will only let you signup - if you have US billing address :(
Skype would work fine here, true.
(ps - watch the vid)