Religion News Service has an article by G. Jeffrey MacDonald on the recent trend of unpaid clergy in mainline denominations, with heavy focus on The Episcopal Church:
The unpaid cleric model is gaining traction among Episcopalians. In the mid-1990s, for example, the Episcopal Diocese of Wyoming had few if any unpaid clergy serving its 49 congregations. Now, 20 priests in Wyoming – more than one-third – are unpaid.
The Diocese of Texas is also featured in the article, along with discussing alternative education, and discussing the positives and drawbacks.