I’ve been very serouslying[sic] considering dropping the only new http verb I’ve introduced for HttpSubscription: SUBSCRIBE. […] I’m coming around to the idea of saying this is simply a GET.
Very wise, young Padawan. As Roy says;
In the REST style, consuming components usually pull representations. Although this is less efficient when viewed as a single client wishing to monitor a single resource, the scale of the Web makes an unregulated push model infeasible.