1. A system comprising: at least one processor and executable instructions accessible on a computer-readable medium that, when executed, cause the at least one processor to perform operations comprising: receiving, over a network at a social shopping platform, a request from a user in a first community of users, the social shopping platform including a plurality of network-based marketplaces respectively associated with a plurality of communities, the plurality of communities including the first community of users that is associated with a first network-based marketplace; identifying the first network-based marketplace from the plurality of network-based marketplaces based on the request, the request including an activity associated with the first network-based marketplace, the first network-based marketplace being used by the first community of users for transacting items of a single domain, the activity identifying a first logical row of component information in a component table based on the request, the component table being a logical table comprised of a plurality of logical rows, the first logical row of component information describing at least one user interface element for personalizing at least one user interface including a first user interface, the logical table further comprised of a plurality of logical columns intersecting the plurality of logical rows to define a plurality of logical cells, the plurality of logical columns describing information received from at least one user in the first community of users and component reputation scoring that is generated based on the information received from at least one user in the first community of users; communicating the first user interface, over the network, for display on a client machine, the first user interface being personalized with the at least one user interface element; updating a component reputation score based on the activity associated with the first network-based marketplace and; updating a user reputation score based on the component reputation score.