1. A computing device, comprising: at least one processor; and memory storing instructions configured to instruct the at least one processor to: receive, in the computing device, a request to register an account for an entity with an electronic billing platform, wherein the request includes credentials of an account of the entity on one of one or more online communication sites; obtain, by the computing device via a network connection, data identifying a plurality of connections between the entity and a plurality of third parties that are registered on the electronic billing platform; identify, by the computing device, at least a subset of the connections, wherein each registered third party in the subset of the connections has an enhanced profile associated with the electronic billing platform, the enhanced profile identifying a reliability rating that is based on a plurality of transactions recorded within the electronic billing platform; determine, by the computing device, a reliability rating of the entity based on the reliability ratings identified by the enhanced profiles of registered third parties; and determine, by the computing device, whether or not to register the account for the entity based on the reliability rating.