No, but most developers just assume that the OS's delete function works, and both accessing the deleted files and deleting them properly requires root access.
Until people started publishing step by step guides for the purpose of retriveing these files, the tools available where quite difficult to use and required a reasonably high level of technical knowledge.

Sorry, my mistake I wasn't aware that it was different for flash. That is probably why they haven't fixed it yet.

Nope, they used data forensics to recovery files, the same techniques used to recover deleted files from desktop computers by criminal investigators, it is not something most developers would consider likely and (until very recently thanks to snapchat and the media attention) something that most users would not have the technical ability to do, especially on a phone.
That being said snapchat developers probably should have fixed it by now (by overriding it before deletion like secure deletion tools do)

Actually it does in the same way that pressing delete in a file browser does, (the article doesn't explain it very well) the problem is that that can be recovered using data forensic tools as it is not overridden merely unmapped. I would argue that is a flaw (or an efficiency decision) in the OS. If you want to securely delete something on a computer you need to use a tool that overrides it a few times first.

If I am not mistaken (and I might be) that is a client to server connection? Not a server to server connection.

Um, SMPT dose not use encryption between mail servers, it is older then TLS and whilst there are secure extensions to the protocol for client/server interactions there is no TLS protocol for server to server interactions.
It is possible to encrypt emails with private/public key combinations, but I have never seen an ecomerce site do this.

With comments it makes it very hard to follow a conversation, especially as the behaviour is inconsistent so you don't realise that the comment that dosen't make sense is actually in reply to the comment 5 comments below it.

I think you may have misunderstood (that figure is total data transferred by all their users), Aerofs is a really good p2p sync tool that you might want to look at for what you want though.

I though it was just symbolic of human ignorance and that the characters simply don't understand the rivers. It could also be a reference to global warming, but I doubt it.

Many people probably found out from the forums, just like with Click & Drag. XKCD has comics where the full content is not immediately obvious, so people assume there is something more.

There's an animation here , that allows you to view the past frames, frame by frame. Personally I find it quite intriguing, although, I preferred it at the start when it was more abstract.

Actually only Windows is required not IE, but that is because it is a desktop application.

Do they have a BONIC client? (Can't seem to check without signing up)
It seems like a good project to run, but I don't want to install a seperate client for it.

I think the idea here was instead of an add funded app to have an app that funds itself by mining bitcoins on clients computers (or phones?) Personally if the process didn't slow down my computer significantly I think I would use it. The question is would the app actually be running enough to return a profit.

That's actually incorrect if you are using shared hosting you tend to get hurt every now and then by spamhaus and other such lists as they block IP address not domain names. It is very easy for one user (who is then usually removed by the hosting company) to get a large number of domains blocked.
I have domains hosted with Jumba an Australian hosting provider and whilst they seem to be constantly improving there security to stop this (to the point where it is extremely annoying) it still keeps happening and means that I am unable to send emails from my domain to people using services such as hotmail.