Link analysis can be very useful for security investigations as I explained last June with regard to the NYC Incident.

Mentionmap is a tool that allows you to graphically display conversations (e.g. replies and hashes) — link analysis for Twitter.

I started by looking at @Number10gov, the official UK government Twitter account (http://apps.asterisq.com/mentionmap/#user-umber10gov). It was fairly rich with connections. Note the connection to @whitehouse at the top of the image:

Compare that with the official Russian Twitter account (http://apps.asterisq.com/mentionmap/#user-Kremlin_e)

The Kremlin led a very well publicized technology tour through the Silicon Valley three months ago and even met with executives at Twitter.

Their account has been active since then, yet they have no links. I checked the Russian version (http://apps.asterisq.com/mentionmap/#user-KremlinRussia) but found the same result.

Differing state-level social media relations policy? Isolationism? Unfriendlyism? Twitter syntax unfamiliarism? I will let you draw (pun not intended) your own conclusions.