Here at Things In the Sky, we (okay, I), like to keep you informed with the most cutting-edge industry data, and here’s our (fine, my) latest valiant effort. 
In all honesty, I hate the word synergy with a burning passion. Yes, it has its uses, but it has been completely overused, making it devoid of meaning. Personally, I think Delta has used this word way too often in regards to its merger with Northwest, so I decided to figure out how many times synergy and its forms (synergies, synergize, etc.) were used by executives, analysts, etc. in recent earnings calls (and there was one call dedicated to the merger itself). Thanks to SeekingAlpha.com transcripts, it was easy to figure it out.
Usage peaked during the second quarter call, at 37, though usage has increased (albeit slowly) of late.
There, now you all have some fresh random, useless knowledge. You’re welcome.
I still think we should integrate it, or take the derivative somewhere. Why put all this calculus knowledge to waste?