For all new scrapebox users, you can use private proxies for harvesting. I have 20 private proxies and I set connection limit to 9 (for google) My advice is that don´t try to use more connections than that. What I see now is 150 urls/s I have made now almost 1million url list and not even one proxy banned from google. So, if you have money to buy some good private proxies you can use those for harvesting faster. Earlier I used public proxies and after 5min speed was like 30 urls/s. I will update this when some of those proxies are banned from google. (if they ever get banned) I bought my proxies from newipnow.com and those work nice.