My maths skills are pretty poor, but trying to work it out:

I have two cards, of the same suit. That means there are 50 cards left in the deck and 11 of my suit.
The flop comes up with three of them, so that's 47 cards, 8 suited.

Can I then say the chances of someone being dealt one of the suited card as a hole card is 8/47 (17%) and then the chances of them getting the second hole card is 7/46.
I make that around a 3% than a person also made the flush already.

Actually it's a bit worse than that, because the combination 43s loses (but that's 2/47 x 1/46 = 0.1%).

If that's true then with 9 players each with a 3% of having a better hand then I should play it strongly.

As for vulnerability that's harder to figure. In order for someone to come in with one club it'd probably either have to be A-J (people play Jxo because of the pretty pictures on the card), the lower clubs would either have to unsuited connectors (but shouldn't be), pocket pairs (unlikely) or be the x in a Ax-Jx sort of hand.

No, the more I think about it, flopping a flush is likely to be the best hand and if someone is drawing to a higher flush (<30%) they should pay big to catch it.

Right, from now I'm I'm raising these big.

But how much?
30 sounds high.
The pot is 21 when it comes to me and the bet is 7.
I put in 14 (2/3 pot), I can see putting in 21, why go > 1xpot?
Or is the idea of betting up to pot-sized bets only applicapble to bets, not raises?


(BTW, if anyone sees where my maths goes wrong, please do let me know).

[Edit:]Everyone else posted while I was trying to writing my post
Seems my 3% (rounding up) wasn't bad.

I'll remember to white things out in the future!
As for the amount of the raises, the HH is a bit confusing and I didn't interpret it right. The value they give is the amount put into the pot so it actually was (bet 7, raise 7 (i.e. put in 14), raise 7 (i.e. put in 14 more) etc...)
So I guess I did hit min-raise.

Bad Anosmic. Bad.