title: Rate limited issue when crawling tweets using Twittr package
body: <p>I'm scraping some tweets using the twittR package. It all works fine, but when I want to scrape a significant amount of tweets I get the following message:</p>
  
  <pre><code>[1] "Rate limited .... blocking for a minute and retrying up to 119 times ..."
  </code></pre>
  
  <p>From reading [(<a href="https://dev.twitter.com/streaming/overview/request-parameters)]" rel="nofollow">https://dev.twitter.com/streaming/overview/request-parameters)]</a> I understand there's a maximum of requests that can be scraped. What I do not understand however is that sometimes I already hit the wall when I crawl 20 tweets and sometimes I can get up to 260 before it's limited.</p>
  
  <p>Any thoughts on what the rate of tweets you can gather per time span is?</p>