“Complementary” is a term prevalent in England, and carries the implication that unconventional therapies can coexist side by side with mainstream medicine.
The most prevalent is the "thought, word, and deed" motif, but I've also found what appear to be alliterating triads (of anatomical features, interestingly) in at least one OE prayer.
How prevalent is social media (social networking sites, blogs, etc.)?
However, one question that has become increasingly prevalent is whether the impending release of Grand Theft Auto IV (on April 29th), the fourth edition of Rockstar's incredibly successful hyper-violent game franchise, will have an impact on the performance of Iron Man (out in theaters on May 2nd).
When I used the word prevalent, I was using it to say that racism, as something that could possibly be quantified, is, in my experience, at similar levels than it has been over the last few decades.