Will shopwiki give shopzilla a run for it money? Swiki's got some neat features like buying and gift guides - to help through the research stage of shopping. As it is a wiki everyone can update it, you can also post videos of products. Also check out the stated web crawling technology (click here)
Another shopping website trying to break into a niche - stylehive. Stylehive is a collection of all the best products, brands, designers and stores discovered and tagged by the Hive community.
Also heard at Techcrunch
Stylehive ... a social bookmarking site that is focused on shopping... believe that there is promise in this space, which includes the just funded Kaboodle, as well as Wists and the upcoming Plum. Why? Because 80% of online shopping is “research” and only 20% is actually “buying”. Stylehive addresses the 80% piece of the market.