I was shown it by a mate, along with soulseek, in like, 2006 or so when in sixth form. It was way better than what I was using at the time (IE)
At least that's what I remember, pretty sure that was the date. I remember soulseek was before by a bit actually as we used it for trading At the Drive In and Mars Volta tracks
I've carried on using it because of plugins, adblocks, privacy, etc.
Just use duckstation to emulate MGS1. You can have the original 320p image if you want, or use the wide-screen hack, perspective correction (no warping polys) and texture packs for a more modern experience. Why people pay for these half arsed shitty emulation collections is beyond me.