on Writers in the Storm:

Over the last few years, I’ve thought a lot about genre. The differences between them and why and how we choose our preferred genre to write in. Some writers are solidly in a certain genre camp and others straddle two or more genres.

Examples of popular “straddlers” – The Hunger Games series, the Outlander series, books by J.D. Robb.

I believe one of the reasons many authors have moved to genres like young adult (YA) or women’s fiction (WF) is that the definitions of those two transcend traditional genres. For example, in addition to the other straddling achieved by the Hunger Games series, it is also classified as YA because of the age of the main character. (YA protags are usually in the 14-21 range.)