Briefing has a free trial going on they mentioned on twitter, get if you want a little edge up & they also have traders making live calls thru the day which is new for them. http://www.briefing.com/
One guy made a nice call for the bounce on CF off 190 friday, they def benefit from lower NG but note when CF was really soaring to 230 NG prices were down at $2s before and just bouncing .These are the dynamics that help you make good trades..
Can see how they picked up on these aggies & ran them right back up to dubl tops, they were good trades, i picked up CF off the 170 tag but you see how it fell & fell back with the rising NG...its directly related. Hell of a good short too from last ER remember that bounce back to 208 failing,,,