For what it's worth, I've found that I much prefer .pdf over .dtf when it comes to Shadowrun. A big chunk of that is due to having a tablet (Galaxy 10.1). I used to lug around an aluminum Attache Case of Doom stuffed with gaming references when I played something to do with dungeons. Or was it dragons? Anyway, I can now do searches and swap between books quickly without taking up lots of table space. And floor space. And chair space. When building a character or trying to decide on how to spend that hard-earned karma or nuyen at my desktop, the searchability and space-savings become even more apparent. There's also nigh-instant satisfaction as well-- as soon as a book like Land of Promise comes out electronically, I don't have to mail-order it (bad local bookstore, no $$ for you!). I simply spend ten minutes trying recall my username and password for Battlecorps, click over to the item I want, and in less time than it takes to drive to that local bookstore (for given values of local), I'm chortling gleefully over the latest antics of our favorite (and some not-so-favorite) Jackpointers whilst one or another tries to drum useful info into the reader's head.
Seriously, Shadowrun is the first (and so far only) RPG where I buy rulebooks for the tidbits of fiction, rather than the other way around. I hope y'all at Catalyst, both full-time and freelancers, get some warm fuzzies from this praise. Oh, and thank you. As I once heard, since the best thank-yous come in the form of dollars, I'll keep on buying your stuff!