If you clean the drives it is usually not a problem. Just by an optical media cleaner that is a disc and that has tiny brushes. One that deionizes doesn't hurt either.
They don't have one of these for Blu-Ray yet (at least as far as I know), but they should have one by the time your PS3 stops reading discs.
I used a disc cleaner on my PS2 (both of them), and they both worked like they were brand new afterwards. One of them had stopped playing DVD's a LONG time ago, but it would play them afterwards like it was the day I bought it.
Not all disc drive cleaners are born equal though, avoid liquids or anything like that. Get an actual disc that has tiny brushes.
We had two bags of grass, seventy-five pellets of mescaline, five sheets of high-powered blotter acid, a salt shaker half full of cocaine, a whole galaxy of multi-colored uppers, downers, screamers, laughers…Also a quart of tequila, a quart of rum, a case of beer, a pint of raw ether and two dozen amyls. The only thing that really worried me was the ether. There is nothing in the world more helpless and irresponsible and depraved than a man in the depths of an ether binge. –Raoul Duke
It is hard to shed anything but crocodile tears over White House speechwriter Patrick Buchanan's tragic analysis of the Nixon debacle. "It's like Sisyphus," he said. "We rolled the rock all the way up the mountain...and it rolled right back down on us...." Neither Sisyphus nor the commander of the Light Brigade nor Pat Buchanan had the time or any real inclination to question what they were doing...a martyr, to the bitter end, to a "flawed" cause and a narrow, atavistic concept of conservative politics that has done more damage to itself and the country in less than six years than its liberal enemies could have done in two or three decades. -Hunter S. Thompson
