I admire Deep to admit that a whole lotta luck has gone into where they are. Probably founder Naukri.com would also admit (i think he did, read "stay hungry stay foolish").
So when people refer to Market 101, i am tempted to ask, can product launch and success be really so mechanical? If it could then Subiksha wouldn't have closed down (i know it is not online) and Indiabulls would not have struggled so long before they could yell "we have arrived" (despite the hugely benign Congress connections).

burrp should, as any other company and strategy should, recognise that serendipity and change are companions. Of these latter is in your hands. So rather than saying the addressable market is small, go ahead and stir a revolution. Online micro credit or SMS based education could be a big thing (i have this imagination, students have a scanner enabled handset, he scans a questions and sends me a MMS/SMS. Within 15 minutes he has an answer with a contextual advert. These could of course be paid services etc.). I am not sharing any idea here. I am just saying that, people with handsets means market exists. You only have to dig deeper to infer for what. Mandibhav.com on WAP? Anyone can deny the need for that? Not me. But i have my GIS maps to make.