When it comes to using proxies for GSA Search Engine Ranker (or other SEO tools), most experts recommend buying and using your own private proxies. However, there are also public proxy scrapers such as No Hands Proxies and Wicked Proxy Scraper that scrape thousands upon thousands of working public proxies for your usage, and promise to be much more effective than GSA's in-built public proxy scraper. So guys, what do your recommend? Have you used one of the above public proxy scrapers? Are they just as effective as using your own private proxies?