Wikileaks, though technically not a wiki, provides an easy means to disseminate information that some find it desirable to share against the wishes of those who find it desirable to keep secret. Aside from the morality of the leaking itself, such a service provides a look into the activities of...
For better landings always catch your runner in mid-fall.
Magnets are useful, but not if you're not earning as much as you're collecting.
Fun thing is some of the power-ups work best in tandem so experiment and see what works with what.