Add FAQ

FAQ.md

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+# I have uploaded a text file but browsers attempt to download it. Why?
+This happens because 0x0 attempts to detect the file type of uploaded files when it hasn’t been specified by the client. Some browsers like Firefox ([issue](https://bugzilla.mozilla.org/show_bug.cgi?id=57342)) will only display content with the MIME type `text/plain` as text, and refuse to do it for e.g. `text/x-shellscript` or `text/x-diff`.
+
+You can prevent this by explicitly specifying the desired MIME type when uploading files. When using cURL, you can do this by appending `;type=text/plain` to the file name on the command line.
+
+# How can I delete uploaded files?
+0x0 returns a management token in its HTTP response header when you first upload a file (`X-Token` field). To delete a file, submit a POST request to its URL with a `token` field containing that token as well as a `delete` field. Here’s a cURL example: `curl -Ftoken=token_here -Fdelete= https://0x0.st/abc.txt`
+
+If you do not have the token, try contacting the instance admin to request deletion.
+
+# All my uploads are gone and my host, network or user agent is blocked from uploading files. What gives?
+In most cases, this happens due to at least one instance of rule violations or unwanted/suspicious behavior such as frequent mass uploads, especially when originating from cloud hosters, VPNs or possibly compromised devices. If you intend to refrain from such uploads in the future or believe your address to have been blocked in error (moderation UI accidents happen), try contacting the instance admin. 0x0.st usually lifts bans right away, no apology required and no questions asked.
+
+# Why is the instance at 0x0.st not reachable from anonymizing networks? Is this some kind of honeypot?
+0x0.st recognizes the right to online privacy, but it has to be weighed against the risk to its continued existence on the clearnet as well as legal repercussions for its operator. The decision to block anonymizing networks at the firewall using [regularly updated ipsets](http://iplists.firehol.org/?ipset=firehol_anonymous) was made following multiple incidents involving CSAM, terrorist propaganda, footage of people and/or animals getting brutally tortured and/or murdered, doxxing, dumps of compromised website accounts and other things someone operating a public file hoster would rather not be held responsible for. And it’s not preemptive obedience—law enforcement authorities as well as the infrastructure provider have requested immediate action several times, including for encrypted archives. Compliance is one of the reasons this site has been around and running smoothly since 2015.
+
+It should be noted that 0x0.st has never disclosed any information whatsoever, and requests to disclose what little information it actually collects for moderation purposes (IP address, time of upload, user agent string) will be rejected unless they follow proper form according to local laws (which, as it turns out, [authorities themselves seem to disregard in almost half of all cases](https://posteo.de/en/site/transparency_report#trfoci)).
+
+## Speaking of which: No porn? Seriously?
+Yes. Explicit content, including drawings and AI-generated media, will lead to a ban at my (Mia’s) discretion. This is not only to comply with the [hosting infrastructure provider’s ToS](https://www.hetzner.com/legal/terms-and-conditions/#8) (which reflects German law); it is also my stance that while it should not be banned entirely, pornography is doing more harm than good, not to mention that I don’t want to look at it whenever I’m screening and moderating uploads. 0x0.st may be very convenient, but please find a different place to dump that stuff.
+
+### Wait, screening? Are you looking at all my files?
+No, that’d be a full-time job I’d literally have to hire staff for, and that work is not for the faint of heart as you can probably imagine after reading the section above. I only look for suspicious patterns, files that have been flagged by NSFW detection, and a few random media files. That’s a tiny fraction of uploads.