After a few refreshes of my Twitter homepage in a short time span, I did a little research: I've edited the CSS to make the distinction of "liked" tweets more obvious. Over 50% of "fresh" content turned out to be likes by the people I follow that are in no way chronological.
You can fight it... for now, but I assume not for long. I've stopped relying on Twitter for that same reason I've stopped relying on Facebook.