New numbers from Hitwise show that while much of the activity on Twitter takes place via mobile, the traffic to the website has continued to grow substantially, MediaPost reports. In fact, visits were up 500% for the week ending July 5, 2008 compared to the same week last year.

The report said that despite user complains about outages, Twitter has remained the most popular among the micro-blogging services. "Last week, the traffic for Twitter was 12 times higher than the total traffic for up-and-coming rival Plurk, and 24 times higher than FriendFeed"—two places where some users had migrated during Twitter outages, according to Hitwise.