11 Jan 09 Most-cited sources on Twitter: frequency v. reach

I have extracted domain names from the URLs that I track on Twitter. Below is a table that shows how many citations and how many unique citing users there are for the top 25 domains since midnight last night.  The numbers are quite different.  For example, Engadget and Digg are cited quite a bit – high frequency – but by relatively few people – low reach. ReadWriteWeb, Mashable and TechCrunch seem to do the best job of achieving frequency and reach.

Here are the top 25 ordered by the number of people who cited pages from each source.

Here are the top 25 sorted by number of cites.