I just realized that I haven't heard "May the Force be with you" or seen a MTFBWY in text in a really long time. Back before the prequels had run their course, it was a pretty common catchphrase of the SW faithful, and was a pop culture element as well. Heck, "Star Wars Day" May the 4th has become a semi-popular meme and yet this year's I didn't see much actual reference to the phrase.
So what's different? Is it due to the limited use in the Prequels, where it's only used by the Jedi a few times? Is it just fading away naturally? Is the OT itself being overshadowed by all the prequels and cartoons and video games?