I found that in my social media i really dont get too many adds probably due to my lack of activity on these sites. But the adds i do get tend to be related to things i have previously liked. for example on facebook i like the NFL and i get a lot of football related adds. the only adds i tend to click on are the sponsored facebook videos that grab my attention, other than that i dont tend to click on adds. I think the adds are effective, i just tend not to click on them. I wasnt suprised at all about how these companies are using our data.