Sometime's I feel like somebody's watching me

OK i can handle the fact that, on my birthday, google appears with letters made of cakes and cupcakes on my computer but not on my daughters (file under kinda cute but creepy) but now I am getting paranoid (almost wondering if the NSA is spying on me). A obvious twitter 'bot followed me with tweets consisting only of advertising for, among other thingsm wasabi flavored ice cream. Now, I think you will agree that wasabi flored ice cream is rather a niche product. Ou may not know that it exists (in Rome to which all roads lead). I hope with some (but rapidly declining) confidence that you don't know that I really like wasabi flavored ice cream HOW does a twitter 'bot know I like wasabi flavored ice cream ??? I feel we have skipped artificial intelligence and gotten straight to artificial ESP.