olx.in (Indian Classified search) expects ZIPCODE?

olx.in expects ZIPCODE not pincode. 

Initially I thought it is might be "message string error" 

But giving a valid PINCODE (e.g. 110034), it still asks for zipcode. (See the screen shot).

I checked on both Chrome and Firefox(12).

I do not think they are using IP2geo-location hunting.

OLX offers localized classified services.  You may post a free classified here.