Mountain Biking - Magnesium Frames. Need Info.

I'm looking into buying a Magnesium frame but have a hard time finding reviews on them. I have read all the stuff that the manufacturers claim them to be but would really like some private opinions. If anyone owns a Magnesium frame or knows about them I’d really appreciate if you gave me some info. In particular I'm interested in it's corrosive properties (if you scratch it and water gets on it), strength, and overall ride. Thank You.

Magnesium has been decribed as an eco material, because it's extracted from sea water.
Although strong and light, it's difficult to work with and usually has to be cast. It's difficult to machine because it's very abrasive, it has to be used as an alloy because it's highly flammable (one scrape..pfft). It can corrode in minutes due to electrolysis, especially if wet (water acts as conductant with another metal). Modern alloys get around some of this.
Dan Gurney's 1967 Eagle F1 car was made entirely out of the stuff, he refused to put seatbelts in the car for fear of getting trapped if it caught fire. Mercedes uses magnesium underframes in newer cars, they use a new alloy that is electrolysis resistent.

Magnesium has been decribed as an eco material, because it's extracted from sea water.
Although strong and light, it's difficult to work with and usually has to be cast. It's difficult to machine because it's very abrasive, it has to be used as an alloy because it's highly flammable (one scrape..pfft). It can corrode in minutes due to electrolysis, especially if wet (water acts as conductant with another metal). Modern alloys get around some of this.
Dan Gurney's 1967 Eagle F1 car was made entirely out of the stuff, he refused to put seatbelts in the car for fear of getting trapped if it caught fire. Mercedes uses magnesium underframes in newer cars, they use a new alloy that is electrolysis resistent.

What about the bike frames themselves. Will I have to throw it out after a year because of scrape marks and in turn corrosion?

Dunno. Depends on the alloy they use. Look for a good warranty against corrosion.

I have a Magnesium Alloy shelled radio and it's very durable, lightweight, and hasn't corroded yet. In fact, it's a water proof transciever. Very nice. ;) Some after market wheel makers have magnesium alloy wheels. OZ racing is a good example.