Habr-excavation: Friendship

On Habré, as in other social networks, there is such a thing as friendship - communication between users. In fact, the use of such a simple connection is immensely small. The list of logins in your profile practically does not mean anything.

I collected all this useless information and made a visualization graph, which is already really interesting to look at. By the large graph it is possible to understand with whom you are friends and who are friends with you, who plyus your articles and more than others admire you.

Follow the link (many years have passed, the link is drunk) and enter your nickname. If you pay for traffic, then be careful, some pictures weigh 2-4 megabytes. If you have no friends - excuse me, I decided to make a picture with the only person in the circle redundant: and so their total weight is 1.5 GB.
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	User
	The number of friends’s friends is shown in brackets. If the user has few friends, it will tell about the value of each individual friend.
	Below is karma and habrazil. Exclusively reference data.
Connections
	A simple colored arrow indicates that there is a friendly connection. The fact of friendship is established by the user whose arrow begins with the user to which it leads. All arrows have a temperature from blue to red. The redder the arrow, the more the user voted for the posts of the person to whom it is directed. This information is from the "Attention Profile" located on each user's page.
	The double arrow indicates that the users are mutually friendly. The temperature of each pair of arrows may vary.
	A hollow arrow without a fill can be sent only from other users to the researched and shows only users who voted for the posts of the researched. Showing no more than 50 of the hottest links-arrows.

Data:

• edge length does not matter;
• information is relevant for the evening of February 2, 2009;
• full collection of information with the generation of graphs takes 3-4 hours;
• data collected using php + curl;
• graphs are constructed using graphviz under Ubuntu;
• during the experiments (a week for one or two hours a day) Habr answered about 400,000 HTTP requests from me.

For some users there are no graphs. Explanation of this fact in my comments .

Some users saved for history: boomburum , bobuk , oowl .