Another day, another promo code, except this one's actually worth two minutes. Boom Sports is running a Play $5, Get $40 in Free Lineups with code CHECKER, and the details live over at OddsChecker's bonus page. Short version: put five bucks into a lineup, they hand you forty in bonus lineups to mess around with. That's 8-to-1 in site credit on a five-spot, about as friendly as welcome offers get.

The number's good but the format's why I looked twice. This is daily fantasy, not straight betting, which matters if you're in a state where the sportsbooks aren't live but DFS is. You're building lineups against projections, the app is genuinely mobile-first (no desktop design shoved into a phone screen, still a shockingly common sin in this space) and the entry fees start low enough that you can learn the mechanics without torching your bankroll.

Fine print is where these offers hide the ugly stuff so let's just be direct. Bonus lineups aren't withdrawable cash, they're credit that lets you keep playing. You typically have to actually run those lineups and win before real money shows up, and there's usually an expiry window on the credit too. Read the terms on the OddsChecker page before you punch in the code so you know the clock you're on. CHECKER gets you in the door. It doesn't print money.

I said it with the Kalshi promos and I'll keep saying it: these platforms are analysis and entertainment for me, never an income stream, no matter whose face is on the ads. A $40 bonus bankroll is a great way to test whether Boom's slate formats and pricing click with how you think about matchups, which is the fun part anyway. If you already spend Sunday morning arguing with projections, this is cheap fuel for the habit. If you want a side hustle, this isn't it, and nobody selling you a promo code is your friend.

The practical play if you're inclined: claim the bonus, burn the free lineups on contests you'd never enter with your own cash, and treat the results as tuition. You learn the app's scoring quirks, you learn how their projections differ from the mainstream sites and you do it on their dime. Better deal than most of what's floating around this space.

It goes in the ledger with everything else, because if I tell you a promo's worth your time I'd better grade myself on it later. Five bucks for forty in play credit and a clean mobile app: fine deal, use it like a scout, not a slot machine.