According to Hitwise, last week’s visits to Twitter.com surpassed visits to Digg.com for the first time. Hitwise measures visits in terms of ?market share,? which isn?t a very helpful metric (both have 0.021 percent market share, but Twitter is ranked No. 84 and Digg is No. 85). This data is as of last week, when visits to Twitter surged following the much-Tweeted emergency landing of a plane on the Hudson. (Note that these numbers do not include usage on mobile devices, desktop apps, or through other Websites via Twitter?s API).
Today, traffic to Twitter was even higher with everybody feeling compelled to let everyone else know that, yes, in fact, the U.S. has a new president and that they saw his inauguration speech. Twitter co-founder Biz Stone blogs that Twitter saw five times as many Tweets per second today compared to last week. So maybe those two lines between Digg and Twitter will keep diverging.
For what it?s worth, Google Trends for Websites also shows Twitter catching up to Digg (but not yet passing). Other measuring services, such as Quantcast and comScore, still show a wide gap.