Vacume, Wash, general sucking things up:
→Don't go at it fast, rather start at a corner and slowly work your way in rows, hovering slightly, so you eliminate back trackign as much as possible.
→"doing fast at first (sort of forcing all the bubbles toward one corner) then hover at the end" -Angeliqe (only works for bubbles, not vacume)
→"the ghosts one, in that one it is actually better to go fast." -aoshingou
→"I find if you go at the ghosts from the bottom, it's easier to vacuum them up." -Roxxie Stella-X
Driving:
→As soon as the screen loads for drive off the cliff, press the right arrow. it's yourbest defence against lag.
Counting:
→"With the click the numbers in order I try to memorize where I've seen numbers that I don't need right away, but that I will need in a bit. That way I can click them as soon as I need them."