Though some have commented on the depth of information available, I would like to remind you of the length of information available.
Around 1992-1996, I was a very active participant of a USENET newsgroup, for business purposes. We discussed many things.
I am amazed sometimes, that I can do a google search on my name, and find many of the wise things I said in that newsgroup, back when the public internet was young, even before most Americans had heard of the Internet. Some of them go back almost 18 years. Fortunately, I didn’t say any incriminating or unwise things, since they’d still be searchable also, and would probably come up first.
So, not only can someone find lots of information on who you are, what you own, and what you’ve said, but all that information may be around until who knows when. Things you say may never get erased.