>>355932781
>>355932781
Good points.
There is a difference in scale and here is where we will have to be pedantic about it.

The contact book has no posting on it, making organizing using it very hard.
Hence it only really has value for contacting specific people you already have in mind.
To organize lobbies, people would still need to use the thread. To talk with more than a few people, the thread is still better.
When you're not looking for a specific person then the thread is better still.

People won't be hawking the contact book for updates from their friends or acquaintances. 
Hence the thread will still be where the public eye is aimed at.

Thoughts?