The way we set ourselves apart from our competitors is three things: a) we were exclusively built for mobile; eg. the entire concept and architecture behind Quindo has been built with mobile in mind (things like simplicity). b) we are focused heavily on being "on-the-go", in the sense that the app is an enabler to ask as as you go about your day. and c) (most importantly) we are focused on short form. we want to simplify the quest for knowledge, and in doing so, we want content to be short form, yet descriptive and informative :)
While we are very much aware that services like Quora do have a mobile presence, our focus has always lied on being focused on short form content. This will remain our main focus as we go along, as it's one of the most important aspects of our service. Inherently, the mobile exclusivity is one of the reasons for us being focused on short form content. We believe that learning should be easy and therefore, that short answers should suffice, as long as they have some substance.
Our niche/target group is frankly, the "every-day-man"; basically, the mom in the grocery store wondering what certain additives do to our bodies; or someone wanting to gain a better understanding of a given history topic; or someone in a nightclub wondering how to approach someone they find interesting. Basically, we are not only focusing on the "non-techy" folks and instead trying to make Quindo a mainstream, all-in-all service for all age groups and topics.
First I'd like to say any criticism I can offer you is only in the spirit of helping you strengthen your product offering.
With that said I don't really buy into your mobile premise. Quora is great on mobile, it's the only place I use it. I don't think having a simple, and mobile focused design is a competitive advantage, at this stage in the app economy it's a must.
Maybe focusing on the element of short length, quick questions is a better idea. Because quora is definitely notorious of having essay sized questions/answers.
Also is there any type of niche you want to focus on? Who is your main user persona other than someone who's curious?
Thanks for your feedback!