Different targets: 5,000 for a short game, 10,000 standard.; Welfare / stealing: you may continue the previous player's running total instead of starting fresh, inheriting the risk.; Three farkles: farkling three turns in a row costs you 1,000 points.
Why people argue about this
People often assume that if you farkle three times in a row, it only costs 100 points instead of 1,000 as stated in the official rules. They misunderstand how "Three farkles" is interpreted under Section 6, thinking it applies to just one turn rather than any three consecutive turns throughout the game.
