Online Blackjack- Can you get banned for winning too much??

[Doctor Futtock]

I don't know whether this is the right forum for bj posts but I'll post anyway.
A few months ago I read a post by someone who complained that Ultimate Bet stopped him using their blackjack software because he had begun racking up quite a large bankroll at their tables.
Well, the thing is, I've been on a good run lately myself. But rather than amassing a huge online bankroll, I've been making withdrawals in increments of $100 to protect my winnings and to prevent me from blowing the lot. Today, for example, I have made three withdrawals of $100.
My questions are:
1. Do they have some sort of detection to spot these types of withdrawal being made?
2. Do they look down on this sort of thing? I.E. Making small withdrawals on a regular basis.
3. Do you think there is a chance that they'll ban me playing their blackjack tables if my good fortune becomes long term?

Thanks in advance.