This is new thing that facebook added and shows you everything your friends are doing. To me, this is very irritating. So decided to get rid of this ticker.
As of now, there is no provision in facebook to disable this ticker.
What you can do to
disable this ticker.
Open the facebook and then in browser, type the line below and press enter.
javascript:document.getElementById('pagelet_rhc_ticker').style.display = 'none';javascript:void(0);
This will hide the ticker.
make sure that the line starts with javascript:
