I know that there are a lot of people who runs proxies here, including myself. I think it would be great to share each other's information as learn some tips on the way for a successful proxy. I sold my network a few months ago for good $XXX and am now restarting the business.
There is ALWAYS demand for proxies.
Even sharing revenue, or that you want a small review on your new proxy, or even updates about what you have done to increase traffic.
Anywhoo, here's some of my tips.
 Submit to topsites, as many as you can. I know that people who look for proxies go on topsites, and target especially new ones. Most proxy topsites are run on Aardvark PHP, and as a template creator for the guy who runs it, I know it pretty well. Most topsites have a link that is "ssi.php". For example, topsitedomain.com/ssi.php - A lot of the top proxy topsites have this on, so you can see the latest 20 topsites submitted. Then they post it on blogs [Iran/Middle East/Asian blogs] and from there, traffic goes crazy
 Do not have a domain with the word 'proxy' in it. When I buy domains, I move away from them. Why? Because that is the number one word that filters block. "Proxies" is usually blocked as well
 Ads that blend are better, and before it was banned, images of attractive females next to them But that is no longer allowed. So keep your ads blending in well
 Create a network. Sooner or later, your proxy will be blocked. Solution? Start another one. Then that gets blocked, so start another one. Thus, a network starts to form. After a while, you will be very $$$ but be careful about overloads on the server
 Bandwidth code - Attached is a code you add (Made by Billy Connite) to your script (PHProxy) to minimise bandwidth and hotlinking. It saves you a lot of $$$ and downtime. Simply copy and paste the mod code into your index.php page, just below the '<?php' at the top of the page.
I have another million things to add, but what do you have to share?