@walmartnewsroom, @nokianetworks, @jnjnews, @caterpillarinc, @oracle, @fortum_oyj, @upm_news, @xcelenergymn, @mcdonaldscorp and @3mnewsroom have been active last week and tweeted more tweets than the week before.
http://sami.salkosuo.net/tweeting-companies-16-22-2-2015/