Do you give blood? How often? How much do they typically take from you? (I'm curious is this varies from country to country) Do they ever have any trouble finding a vein, etc?
Yep, I donated for the first time yesterday (I'm a young 'un, so it was the first time I could). I'll donate every time the blood drive comes back to my school. If I remember correctly the bags they use hold 450mL (I'm in New Zealand). Unfortunatly my veins suck, I have about 3 tendons which look like veins (and hurt like hell when they get stabbed), and one useable vein, which started off well, but sort of putted out about 2/3 of the way through the bag- it ended up with just air bubbles going though the pipe, so they decided to stop it there.