No limits? Are you sure? Aren't you scared of match fixers then? They can just place a bet of a million USD on a lower league soccer game, or on a low level tennis tournament?
Or did you mean to say "no INDIVIDUAL limits" as in: every game has a fixed max stake which counts for everyone the same.
If so: where can we spot this max bet limit?
I think he was talking about individual limits and not something else since that was what I was referring to. Decentralised betting sites like this one don't really enforce limits since they are fine with gamblers winning consistently.
Some sites display these limits properly(Usually while placing the bets) while some others don't display anything and an error pops up if limit gets exceeded.