How Irish Punters Faced a Sudden Shift in William Hill Odds-Boosts in 2016
https://www.nav-bookmarks.win/when-a-big-bonus-backfired-a-case-study-on-odds-changes-and-wagering-pitfalls
In early 2016 a quiet but meaningful change rippled through the Irish betting market: the way William Hill offered and applied odds-boosts to customers in Ireland altered enough to affect real money returns