Very little. I am not allowed to play freerolls on sites, that are regulated in my country, such as PokerStars, 888 Poker and PartyPoker. This is because, our government beleive, that any kind of incentives might make people gamble more, which the government consider to be bad. And to be fair the only reason, why sites offer freerolls, is to make people come to the site more often and then also play other games. So they do have some kind of point
I could play freerolls on unregulated sites like ACR or Betonline, but I am generally not interested in those. They tend to either run late at night in my timezone or be for completely insignificant money. I have played the CC freeroll on ACR once and managed to score a small cash
I can sort of understand the governments restrictive approach but at the same time think for some who learnt online then joined CC to build a bankroll via freerolls its actually quite a sensible environment. You need patience and discipline to build bankrolls in this manner!
What place do freerolls take in your gaming life? Someone constantly earns it? Or does it maintain its bankroll this way? Maybe someone started by playing freerolls, but now they don't play them at all, works at high limits?