There is no Adware,or Malware with 0catch.I've been using it for over 8 years and the only problem I've ever had with it is their server going down at the wrong times.0catch is one of the larger web service providers which I have no intention of leaving because somebody's screwed up software says there is Adware or Malware or Webspam on it.As for file sharing it would be rather useless without it.
Web hosting providers often devote a portion of their service to sites (such as pron) that may sometimes deliver or redirect to malware, etc., unbeknownst to the host. Since these are usually paying customers, it's a way of subsidizing their "free" website offers. Unfortunately, this can affect the legitimate sites using the same service because a few questionable sites can blacklist dozens of good ones that share a common IP address. It's not due to "somebody's screwed up software," but the consequences of common hosting practices.
Also, Phil's use of the term "file sharing" refers to repositories where copyrighted files, such as music or videos, are made available for unauthorized downloading. It doesn't refer to the legitimate hosting of files, such as images, owned by the persons storing them. If detected, file sharing can also blacklist legitimate sites on a common IP.
Edit: I just checked the 0catch hosting plan details, and they indicate that paying plans have "No file type limitations - Can have MP3, EXE, ZIP, etc." and "No site type limitations - Can use for storage, image galleries, video downloads, etc." This can be a source of some trouble.
Also, this does not look good:
http://www.caretower.com/threat-news/spammers-taking-advantage-of-free-online-hosters/158 -- specifically mentions 0catch as a source of spam
http://blog.dynamoo.com/2012/01/0catchcom-and-malicious-bbb-spam.htmlhttps://www.mywot.com/en/forum/24298-free-hosting-services-abused-0catch-comBottom line: you get what you pay for. If I were using 0catch, I'd be closing my account in a New York Minute.