The time an HTTP request takes to pass through a proxy, a proxy, a proxy

A bit of fun I had last night with running a HTTP request through a stupid amount of proxies. The main take-away is that a http proxy will not add too much latency, assuming fast interconnects. I would, however, not advise to chain 500 proxies.

> a few HTTP proxies

I've never seen more than one, where are these people using "a few HTTP proxies"