The beautiful flower of Internet conversation: how many petals do you have?

This is an excerpt from one of the new blogs I subscribed to, The 28-Hour-Day diet, by an Australian ER physician:

There are an exponentially increasing number of ways to follow, tag, talk, poke, nudge and communicate with a person in the virtual world. My favorite visuospatial demonstration is the Conversation Prism by Brian Solis. The expanded flickr image gives a great representation of the articulation of social media facets in 2D mapping:

This beautiful flower of Internet communication replaces the old starfish of Web 2.0 shown below:


Social Media Starfish created by Darren Barefoot (a Creative Commons license).

I have accounts on the following social web services:

1. Blogger.com
2. Twitter
3. Facebook
4. LinkedIn
5. Picasa Web Albums
6. Flickr
7. FriendFeed
8. Google Reader Shared Stuff
9. Wikipedia

In the last 2-3 months, I have found Twitter and Facebook quite useful. For example, we used Facebook to create a group for health professionals attending the Annual Perioperative Summit and another one for fellows and faculty (both former and current) at the Creighton University Division of Allergy and Immunology.

You can read more about Twitter in A Doctor's Opinion: Why I Started Microblogging on Twitter and check the weekly Selection of My Twitter Favorites.

How many social services do you use? List them in the comments below.

References:
Social Media Starfish and 6 Axes of Medical Education in Web 2.0 Style
Social Media Communication. The 28-Hour-Day diet.
A Doctor's Opinion: Why I Started Microblogging on Twitter