When googling around I came across this weird stack overflow lookalike.
Is it.dbline.net a phishing site?
As far as I can tell, no.
Browsing through the source code, all scripts seem to be the unaltered scripts from cdn.sstatic.net.
No idea. My Korean is a little rusty, but Double Line is a computer science and engineering research group. The IT subdomian somehow suggests that it's their Q&A site. Maybe they think it's funny...
It's a site full of knaves who shall be rightly punished. (Or asked nicely to remove their site by yours truly. If they refuse, they will be subject to the wrath of Michael Pryor.)