there is a site called olx.in which is in heavy promotion mode; adwords on most google searches, then there are several niche-based classifieds sites, for eg for property there is 99acres.com and magicbricks.com, for matrimonial-related ads (nope, no real "personals" here, ppl prefer to directly get married :) ) there is shaadi.com, naukri.com for jobs, some misc regional sites, etc.. like I mentioned, no clear leader has emerged.

they all seem like top tier commercial niches, anything like craigslist emerging? is this an opportunity even if launched in a particular city