Plasma? I'd do it for free, and it is even better if you get a some kind of refund from it!
I just get tattoos and have sex, so my blood-giving days are quite numbered.

As for me, I'm generous, they can take my plasma, lazor death ray, whole basket of neutron bombs and both of rocket launchers.

(folks who are buggering and inked are prohibited from giving blood?)

These are from Finnish blood-taking/giving organisation rules:
6 months ban fom tattoos, even getting earrings (aside piercing earrings) is baaad m'kay!
Gay sex: you can never give blood
sex: 3 months (even if condome is/was used)
Pilots, train and heavy duty machinery "pilots": Never

for example.
So, we are doing my sleeve once in one or two months, so I am banned for almoust a year from now on

Pilots and train drivers? Are they more prone to blood disease?

I've never looked into giving sperm, but I waste a fair bit of it, so it might as well be going somewhere useful.

Blood in Australia is given for free, but I'm pretty sure they give you food and maybe a drink.

You have to be over 16 and under 71, Tatts and piercings rule you out for time, Pregnancy, man on man sex, being a sex worker. Theres more but I'm to lazy to read their website.

I think the main thing with tatts is that they are worried you may have picked up a blood borne virus like Hep C.

Blood in Australia is given for free, but I'm pretty sure they give you food and maybe a drink.

Now that would be nice, a couple shots of vodka first, then donate some blood