Naruto Spoilers, you really do either love them or hate them and its the same with any other manga.
The worst thing ever is coming across a spoiler by accident, the day before you read the latest chapter. Actually, the worst thing ever might be for an anime watcher turned manga reader coming across a spoiler when you have only started started reading the manga, and the spoiler happens 400 chapters later! Been there.
On the other hand, it could be the best thing ever, if you're the type of person that can not wait for the real thing to come out.
Manga spoilers these days are not readily available from a large number of sources. There may only actually be a handful of J-Citizens out there that inform the Western manga community of the ongoings, as the manga is released in stores weekly in Japan of course. When the actual thing is released, the chapter then gets thrown into the otaku production like, scanned by a faithful Japanese citizen and then translated into English by their Western collections. During this period, the 'professional' groups have different members assigned to different roles ie a scanner, a mopper and translator (or two). Collectively, this is known as a scanliation group, smart eh? The mopper by the way, edits the manga graphically so it appears whiter and cleaner than the original scan did.
Like it or love it, it is yet another fine example how things in this world are evolving with the Internet!