You should be able to browse the data that is available without registering by clicking on "Buy Data" in the header. We make people register when they request a dataset because we want to be able to let them know once we've found their data.

We're working on an API that will allow sellers to programmatically refresh their dataset to keep it up-to-date with the source. We're also working on a search and filtering system that ranks datasets based on when they were last updated.