This is by no means an exhaustive list nor 100% accurate but yes data, likely to go in to the social profile they build of you to sell/use in advertisements. D

This is by no means an exhaustive list nor 100% accurate but yes data, likely to go in to the social profile they build of you to sell/use in advertisements. Data such as; information provided at sign up, web/links to other users based on sign up info, inferred location information, purchases, interests, visited products, used products, active hours, usage hours, general use metrics... etc