I was thinking about stories I have heard: people saying they were talking about a particular product or product type then seeing adds for that.
I guess it's kind of selective perception. Years ago I noticed that after I bought a yellow Datsun all of a sudden the roads were full of them. This was long before the internet, so you can eliminate that as a variable back then.
But yes, when nowadays your machine can search through a bazillion words to discover you mis-spelled "buoy," and underline it and offer suggestions to correct it all within a second or two of typing it,you can be sure The Big Boys are using fast algorithms to suggest what they think you want.
Humph. My machine (or something) is telling me I mis-spelled "mis-spelled."
"Spellcheck is my worst enema."
Terry, 230RN