2.) why do people need a payout from pool of 0.20 BTC like 5 times a day (see screenshot somewhere above)? Do they spend these coins instantly? Do they not trust slush for 1 BTC? (note: I don't really care, since a lot of transactions are a good test of the network, I just don't understand the logic)
If you look it's like twice a day(i had special situation for that to happen) to once every two weeks, I'm a slow miner so I get a nice feeling just getting them sent to me, I'm not worried or anything. I should probably turn it up to 1BTC though, but with difficulty sky rocketing, it be a month maybe before i'd get paid ~$4 worth of BTC....
EDIT: This is a problem with bitcoin, if small transactions are bad, then that spells trouble. IRL I could give back and forth a penny to someone a million times withour issue, in Bitcoin this is terrible.
If you buy a piece of gum, your stressing the network... there's too much reliance on others to make sure it works.