Analyst: Twitter traffic pulls even with Digg

One of the smartest Internet analysts in the business, Heather Dougherty of Hitwise, revealed some potentially prophetic data yesterday: Based on the samples of traffic that Hitwise tracks, it would appear US-based traffic associated with social contact service Twitter is at least equivalent to US-based traffic on news sharing service Digg, at about 21 out of every 1,000 hits.

Now, it's worth noting that Digg traffic tracked by Hitwise isn't exactly plunging, though Dougherty's chart does appear to indicate it's trending slightly down.