Yes Facebook does. I studied their patent applications related to Facebook gifts and it was written that to suggest a gift the algorithms of FB will analyze wha

Yes Facebook does. I studied their patent applications related to Facebook gifts and it was written that to suggest a gift the algorithms of FB will analyze what you are writing so that a gift on a gift appropriate even can be suggested to you. Recently another patent application suggests that Facebook will also use the your device information to target advertisements. For example, if you are using Samsung's Galaxy S4 and there is an advertiser who wants to sell some accessories of S4 then FB will target his ad to you. Though this is good for a user perspective, however, for some users take this in another way.