What is the GRPL?
Great Reformed Ping List.
A "ping list" for Calvinist Presbyterians, Old School Baptists, and the occasional Reformed Episcopalian and Missouri-Synod Lutheran. Basically, anyone who held to the core doctrines of the Reformation (Scripture alone, Faith alone, and Absolute Predestination being the three main theological distinctives of the Protestant Reformation... [there are actually five "Solas" of the Protestant Reformation; but the Eastern Orthodox, at least, don't really object to our doctrines of "Solus Christus" or "Soli Deo Gloria", so we tend to focus on our most distinctively Protestant traits ]).
A while back, a bunch of the GRPL were banned for various reasons, and I took a year off from Free Republic.