A trend is only a trend when more than one is doing it.
From Dictionary.com:
"trend ( P ) Pronunciation Key (trnd) n.
1. The general direction in which something tends to move.
2. A general tendency or inclination. See Synonyms at tendency.
3. Current style; vogue: the latest trend in fashion. "
Before Mansion Productions made cascading billing ready and available for the "masses" this was considered an anamoly and very expensive to implement. Now that more than just a few use it, I will go as far as to say that cascading now is one of the the latest trends in the adult entertainment internet industry for sure...