What counts as a steam move
Bookmakers adjust prices when money comes in on one side, both to balance their own exposure and, at sharper books, to react to who is betting. When one bookmaker moves a line and several others follow within a short window, that's a steam move: a sign the price shift reflects new information, not just one bookmaker's own liability.
Why it's worth watching
A single bettor's opinion is noise. A price move that several independent bookmakers agree with, fast, is a market-level signal, similar in spirit to closing line value: it's evidence about the price, not a guess about the result. Chasing a line after it has already moved is much harder than getting there first, since the value has usually shrunk by the time it's visible.
How Sharp Bets shows this today
Sharp Bets doesn't run full multi-bookmaker steam detection the way some paid tools do. It does have a lighter version of the same idea: the Odds Down signal marks a pick whose price at Pinnacle, the sharp reference book, has fallen since it was first found, which is often exactly the kind of move a steam signal is trying to catch. It's a narrower, single-reference-book version of the same underlying idea, not a full cross-book steam scanner.
Reading it without overreacting
A price move isn't proof, only evidence. Bookmakers also move prices to balance their own book rather than because of new information, and the same caution that applies to any single result applies here: one signal on one pick tells you little, and the pattern only means something over a real sample.