I'm a little confused how you use pot odds in NL hold'em.
In limit hold'em for example you need ~5:1 to call with your OESDs. But in NL I see people are regularly calling all-in in the same spot with 3:1 and saying things like "I'm about 30% to hit, and getting 3:1 on my money I'm about break even" which just doesn't make sense to me. Thats obviously a losing proposition. They can call 30% of the POT SIZE and be breakeven, yes, but they can't just call an all-in because they have 3:1, right?
Yet I see it over and over.