Answer:
Conspicuous consumption
Explanation:
Conspicuous consumption is a term used to describe expenditures on goods and services purchased primarily for the purpose of showing wealth. In the mind of the conspicuous consumer, such display serves as a means of having or maintaining social status before a social group, which socially determines objects and goods, such as a classification of higher or lower status. An example of this can be seen in the question above, where the girl bought a very expensive purse just to show that she possessed something luxurious and give an impression of wealth.
Spam by definition means 'irrelevant messages sent over the internet' but in the context of teens and social media it basically refers to posting or commenting heaps of stuff, whether it be a spamming of emojis, random words or letters, a particular phrase... Just something that gets said or posted way more times than necessary.