Prior to the Supreme Court decision, Oregon was one of five states exempted from the Professional and Amateur Sports Protection Act. Like Montana and Delaware, it was limited to lottery pools. Oregon had a parlay NFL pool in place, but ended it after the 2006 NFL season to encourage the NCAA to allow the state to host college basketball tournament games. On Jan 14, 2019, HB 2288 was introduced creating requirements on how net proceeds from from sports betting would be applied. There has been no further legislation for regulation of sports betting.
A pleaser is a reverse teaser. This involves a player giving points away from the published line. That number is typically seven. Pleaser cards are often even where ties lose so books will try to place the lines on important numbers. Pleasers are normally available only in American football. Sportsbooks will try to place teaser lines on important numbers like 3, 7, 10 and 14. Ties lose in a pleaser.
Sports bettors place their wagers either legally, through a bookmaker/sportsbook, or illegally through privately run enterprises. The term "book" is a reference to the books used by wagebrokers to track wagers, payouts, and debts. Many legal sportsbooks are found online, operated over the Internet from jurisdictions separate from the clients they serve, usually to get around various gambling laws (such as the Unlawful Internet Gambling Enforcement Act of 2006 in the United States) in select markets, such as Las Vegas, Nevada, or on gambling cruises through self-serve kiosks. They take bets "up-front", meaning the bettor must pay the sportsbook before placing the bet. Illegal bookies, due to the nature of their business, can operate anywhere but only require money from losing bettors and don't require the wagered money up front, creating the possibility of debt to the bookie from the bettor. This creates a number of other criminal elements, thus furthering their illegality.