Stacey definitely tried forming a voting bloc before Rich did, but as far as alliances go (which I think in reality transcends merely voting as a group and becomes playing the game as a group), I think Richard and Sue definitely invented the 'alliance' as most reality TV fans think of it. The "Evil" TAGI alliance was and still remains the gold standard for alliances IMO. Sue and Richard (in particular) really set the tone for the game of SURVIVOR and most reality TV shows where voting a person off is a gameplay element.