Web Proxy Server Questions

[saversites]

Folks,

You know I have been googling to learn the risks of running your own open public proxy but no luck in finding any link that spells-out all the risks involved. Do you know of any good link ?

Gonna use Mini Proxy gpl script.

I want to run a web proxy like anonymouse.org. 
Been reading:
https://www.godaddy.com/garage/how-to-set-up-an-https-proxy-server/

The following questions are regarding running my own web proxy.

Q1. What must I look-out for when running my own web proxy ?

Q2. Is it necessary to host your web proxy on httpS (SSL) ?

Q3. Is it necessary to buy a httpS (SSL) certificate for my domain or website ?

Q4. What resources must I get from my webhost as a minimum ?
I was told to get the following:

* An Apache server with at least PHP 5 installed, along with cURL support.
* Write access to public_html.
* The ability to set up a proxy.

Is there anything else you'd like to add in that list that I must get as a minimum from my webhost to run my own open public web proxy ?

Q5. Anything I should know ?

Thank You

[saversites]

As for the risks involved with running a web proxy server, I can think of the following at the top of my head. I'd appreciate it if you can add your own risk possibilities and grow the list.

* Too many users simultaneously using the service - (slowing down your proxy server)
* Illegal Sites Browsing - (getting your proxy server IP in trouble with the law)
* Viewing Streaming videos - (slowing down your proxy server and draining the bandwidth and causing trouble for other users such as timeouts)
* Bulk Downloads (videos, music files) - (slowing down your proxy server and draining the bandwidth and causing trouble for other users such as timeouts)
* Bulk Uploads (videos, music files) - (uploading virus & distributing it, slowing down your proxy server and draining the bandwidth and causing trouble for other users such as timeouts)
* DOS Attack - (getting your proxy server IP in trouble with the laws)
* Pirate Software Downloads - (getting your proxy server IP in trouble)

But, I don't think I would have any of the following risks by running a web proxy unless I run a Socks Proxy, right ?

* Spamming via your SMTP (unless, I run a webmail)
* Torrenting (Mas Seeding)
* Spreading Virus & Malware (unless, I allow uploading to my site/server)

What do you say ?
Anyway, do you know what kind of hacking risks there are by running a web proxy (if there are any risks, that is) ?

[administrator]

This is a deep question ... specialized programming. That said, I would be working over SSL because people expect SSL these days ... especially Google.