Business Insider's Jim Edwards writes that Twitter deleted two of his tweets that discussed a Bank of America Merrill Lynch analyst's report, after the bank alleged that the tweets infringed its copyright. "The claim here is (in my view) frivolous because I tweeted only a small portion of analyst Teo Lasarte's note to clients," Edwards writes. "If I had tweeted out a PDF of the whole thing, for anyone to download, that would be a decent copyright violation claim."