This article about Twitter’s going public says:
Like Facebook, Twitter makes its money primarily by selling ads, which gain a lot of their value from the advertiser’s ability to target specific groups of users.
I’m so used to ads on social media that I don’t even notice them anymore. I must somehow register their presence, but I seem to automatically ignore them. This is true of Facebook and Twitter - I’ve looked at both this morning (I found the article I quoted linked to on Facebook), but I can’t tell you about even a single ad I saw. This was also the case when I used Gmail.
Come to think of it, it’s the same with advertising on posters or billboards. I walk around the city a lot, and, though I could tell you the location of some billboards, I couldn’t tell you what’s on them.
I wonder if I’m unusual in this - and, if I’m not, how ineffective online ads must be.