Here's a collection of the most frequently asked CPU related questions we get.

- Will my CPU be damaged by overclocking it?

- What's the difference between a Slot1 and a PPGA/Socket370 Celeron?

- How much voltage can my chip take before it goes up in flames?

Will my CPU be damaged by overclocking it?

Probably not. If you provide adequate cooling, there should be no problems with you CPU.
It will probably shorten the life of you CPU, but who cares if the CPU will last 5 years instead of 10, since it will be nearly antique by that time anyway. 

What's the difference between a Slot1 and a PPGA/Socket370 Celeron?

The Slot1 is the interface that the PII and 0,25 micron PIII series of CPU's use to attach to the motherboard. It's also the interface the older Celerons use, but the newer Celerons use the newer PPGA (Plastic Pin Grid Array) interface. This interface (aka. Socket370) either requires a socket 370 motherboard or a Slocket adapter that lets it fit in a Slot1 motherboard.
The PPGA Celeron can only be used with Socket370/7 coolers.

How much voltage can my chip take before it goes up in flames?

That depends on the the cooling you apply. A 5% increase should be safe with the standard cooler, and if you have a CoolWhip you should be able to take it to 15-20% above specifications without being afraid of frying the thing.
The key factor is to keep the CPU temperature below at least 50ºC (preferably below 40ºC), and then raise the voltage in small increments until it becomes stable. But be warned, use caution and never raise the voltage above 20% above specifications -it won't help anyway.

More to come...