All those (ad)flying links caused the server to break (with it's malware).
Or did the server collected too many bugs and errors, and finally breaks???
Or... oh please, don't tell me it's still running on it's founding server (a bit ancient and cracking a lot).
Maybe their were people that hated adfly links so much and hacked the site... (Well, it would be better to hack adfly, so it would be less likely.)
Was mangashare taken down by DMCA???