Instagram app has a several, Lomo-like 'filters' to add fizz to the shots the iPhone takes otherwise. On top of that, it has an icing of a social feature that allows you to share the pictures with Twitter, Facebook, Foursquare, Flickr and Tumblr.
There is a plethora of shopping sites, a few of them good while others are failing to deliver. A client tipped me about an upcoming site that's about to launch their beta site soon. The site, TestFreaks, will be aggregating a bunch information such as, professional reviews, user reviews, forums, blogs and prices.