A great provider of fast exclusive proxies is Your Private Proxy who I’ve had proxies with since February 2010, they support ScrapeBox and i highly recommend them based on my time using their service. They only offer “Exclusive” proxies, which are a little more expensive but far more reliable and faster than shared proxies because you are the only person using the proxies you are given. They make a huge difference in terms of speed and success rates compared to free proxies.

This means with less proxies, you can typically harvest more URL’s from Google, perform more PageRank lookups or Indexed Page Checks than you can with shared. Also the proxies will generally be a lot faster with all tool operations including commenting due to less users accessing the server.

I find their 10 IP package for $29.97 per month ideal for normal use.

Also Proxy Central is a provider of “free” proxies, however the owner scans many thousands of proxies every day and provides lists of the working proxies. As anyone who has scanned lists of free proxies knows, it’s a very time consuming and bandwidth intensive task filtering out the dead proxies to compile a working list. So for a one time membership fee for access to daily lists of scanned/filtered proxies, it’s an affordable alternative to exclusive private proxies with a monthly fee.

Another option is proxy software that enables you to harvest and test free proxies from various free proxy sources. ScrapeBox can do this, however since ScrapeBox is not a dedicated proxy harvester/tester it only offers minimal functionality. Dedicated proxy harvesting and testing software can offer advanced features like country specific proxies, blacklists, uploading proxies to FTP etc.

Two such software solutions are Proxy Goblin which also features a dedicated ScrapeBox plugin, and also Proxy Multiply.

Please note ProxyBonanza and PacketFlip do “not” support the use of ScrapeBox with their proxies and they are not a viable provider for running ScrapeBox.