1. A method comprising: accessing, by a hardware processor, a table comprising joined data, the joined data including historical data comprising data based on actions performed by users, listing data comprising data describing each listing, and a determined category for each listing; determining, by an aggregation module, demand scores based on the joined data; determining, by an aspect determination module, at least one most relevant aspect name for a category based on the determined demand scores; and in response to an indication that a user is creating a new listing within the category, transmitting a message for display on a device of the user, the message indicating the at least one most relevant aspect name for the category and suggesting the user provide an aspect value that corresponds to the at least one most relevant aspect name to be included in the new listing.
1. A method comprising: accessing, by a hardware processor, a table comprising joined data, the joined data including historical data comprising data based on actions performed by users, listing data comprising data describing each listing, and a determined category for each listing; determining, by an aggregation module, demand scores based on the joined data; determining, by an aspect determination module, at least one most relevant aspect name for a category based on the determined demand scores; and in response to an indication that a user is creating a new listing within the category, transmitting a message for display on a device of the user, the message indicating the at least one most relevant aspect name for the category and suggesting the user provide an aspect value that corresponds to the at least one most relevant aspect name to be included in the new listing. 9. The method of claim 1 , wherein the determining the demand scores is a function of two or more action counts selected from the group comprising impression counts, click action counts, Buy-It-Now action counts, bid action counts, watch action counts, ask action counts, and offer action counts.