Inspired by another member (phpbuilt) on here I'm about to embark on building my own twitter follower scraper using the twitter API. I've read the api limits call to something like 15 calls in 15 minutes. Each call return 200 followers. So, in an hour, using only one account I can scrape 12,000 followers. In a day 288k followers. Let' say I want to run 4 or 5 instances of this php script at the same time ... whats the best way to do that? cron? Thanks in advance.