What the hell was that? A pop-up?

I was at m-w and this full-size window pops up and say’s “To see something fun, hold down your enter key for ten seconds”. I didn’t, but it kept comong back. I minimized the window and closed the browser. I’m on a mac, and using IE.
Any ideas?
Peace,
mangeorge

I’m on a PC with IE, but after a few minutes of clicking around, I get nothing. It might be adware. I don’t know much about it, but I’d google for “adware blocker” or maybe “spyware blocker”.

Good luck.

I’ve been trying to find out what it was. It’s a full-size window with the little mac “ok/cancel” window on top.
I suspect adware grom m-w.
Thanks