Violentmonkey VS PredictIt

• Free and Open Source
  Violentmonkey is freely available to use and the source code is open for anyone to inspect, modify, and contribute to. This ensures transparency and community-driven development.
• Active Development
  The project is actively maintained and updated, which means that bugs are fixed promptly and new features are regularly added.
• Cross-Browser Support
  Violentmonkey is compatible with multiple browsers including Chrome, Firefox, Microsoft Edge, and Opera, providing flexibility to users regardless of their browser preference.
• User Script Manager
  It allows users to manage and run custom scripts to enhance web pages, providing extensive customization options for a tailored browsing experience.
• Easy Backup and Sync
  Features like backup and sync allow users to easily transfer their settings and scripts across different devices, ensuring a consistent experience.

Possible disadvantages

• Learning Curve
  For new users, especially those not familiar with scripting, there might be a learning curve involved in understanding how to write and manage scripts effectively.
• Security Risks
  As with any tool that runs third-party scripts, there is a potential risk for malicious scripts that can compromise user security and privacy if not properly vetted.
• Dependency on Community Scripts
  The quality and functionality of Violentmonkey heavily rely on the availability and maintenance of user-submitted scripts, which can vary in quality.
• Browser Performance Impact
  Running multiple or poorly optimized scripts can affect browser performance by increasing loading times and resource consumption.

• Real-money political forecasting
  PredictIt allows users to trade on real-world political and economic events using actual money, providing tangible financial incentives that can lead to more accurate crowd-sourced predictions than traditional polling.
• Academic legitimacy
  Operated in partnership with Victoria University of Wellington, PredictIt has a no-action letter from the CFTC for academic research purposes, giving it a degree of regulatory recognition and legitimacy compared to unregulated prediction markets.
• Diverse market offerings
  The platform covers a wide range of topics beyond just elections, including legislative outcomes, court decisions, economic indicators, and other newsworthy events, giving traders many opportunities to speculate.
• Transparent pricing reflecting probabilities
  Contract prices on PredictIt (ranging from $0.01 to $1.00) directly reflect the market's perceived probability of an event occurring, making it easy to interpret sentiment and track how odds shift over time.
• Low barrier to entry
  Users can start trading with small amounts of money, as low as a few dollars per contract, making it accessible to casual traders and enthusiasts who want to engage with political forecasting without significant capital investment.

Possible disadvantages

• Trading and withdrawal fees
  PredictIt charges a 10% fee on profits from winning trades and a 5% fee on withdrawals, which can significantly cut into overall returns compared to other trading or investment platforms.
• Position limits restrict scalability
  The platform caps the number of shares a single user can hold in any given market (historically around 850 shares per contract), preventing large-scale trading or significant capital deployment even when a trader has high confidence in an outcome.
• Regulatory uncertainty and legal challenges
  PredictIt has faced ongoing regulatory scrutiny, including a CFTC attempt to revoke its no-action letter, creating uncertainty about the platform's long-term legal status and potential for sudden shutdowns or operational disruptions.
• Liquidity issues in niche markets
  While major political markets like presidential elections have good liquidity, many smaller or niche contracts suffer from low trading volume, resulting in wide bid-ask spreads and difficulty executing trades at fair prices.
• Limited to U.S. users primarily
  The platform's terms of service and functionality are primarily designed for U.S.-based users, and non-U.S. residents may face restrictions or complications when trying to deposit, withdraw, or verify their accounts.

No analysis of PredictIt yet.

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• Show HN: UserScript to manually choose model for ChatGPT website

  - GPT 4o mini, so you can save your 4o calls for more complex queries https://github.com/altbdoor/userscripts/raw/master/force-gpt3.user.js. - Source: Hacker News / about 2 years ago

• If your Firefox suddenly started to hang or become extremely slow today, check if you have tampermonkey 5.0. Disable it for now as it seems to be the culprit.

  Since Tampermonkey seems to be misbehaving, consider using Violentmonkey. Source: almost 3 years ago

• Current plan for the flag

  Step 1Install violentmonkey (or your favorite user script manager). Source: about 3 years ago

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Tracking PredictIt since Aug 2026.