I recently came across an interesting service: KarachiDeals, which carries information about a host of deals and promotions in telecom, clothing, fast food, apparel, restaurants, travel etc. Being a Karachiite this site would appeal to anyone who wants to find deals in their areas of interest. For Ramadan, many Iftar, Sehri and Eid shopping deals have also been added.
The website has easy navigation with blog like tags and search options but I think they could do more to make it stand out. The most attractive feature is that it not only lists down latest deals and promotions but also carries images of the ad promoting the deals, adding to the authenticity of what is being said.
Definitely worth checking out and revisit if you are interested in discounts and deals.