Vimm's Lair is a site dedicated to console videogame nostalgia.
And looks like Rockstar Games decided to take the ROM down. Wondering why only for PS2, why only San Andreas and why only NTSC. Because PAL, other platforms and other GTA games for PS2 are unaffected.
It doesn't matter if you are downloading it, what matters is that you'll play it and/or won't get the "Definitive Edition" or whatever is called the crap they are changing for this one.