Q1. What's the difference between do.call function and lapply function in R. When we try to use searchTwitter function to retrieve info from twitter, what format are the info retrieved as? Is this format open? What are the advantages and disadvantages of this format? Q2. The data below represents blogs posts discussing and linking to a viral video. The data is in the format of source link. For example, huffington.com video would be interrupted as huffingtonpost.com linking directly to the video. myblog.com huffingtonpost.com would be interpreted as myblog.com posting a link to a