Here is another slide from Valdis Krebs presentation that caught my attention.
There’s hope for lurkers, the inhibited, the shy, the intimidated and the lacking in confidence people here! This slide shows people with strong and frequent interactions /connections linked with the dark lines. But as the slide shows very clearly, without the weak ties to hold them all together, the network would collapse! So we shouldn’t underestimate the importance or significant of the weak ties!