[quote=@Prisk]
<Snipped quote by Mr Allen J>

But then it's just a bunch of 1x1s in the same thread? And, doesn't it form unnecessary cliques?
[/quote]

I've found that to be a huge problem honestly. It can be somewhat stymied by a good GM who looks actively (keyword) for newplayers, and to welcome them in, but yeah, I've found collabs can be a overdone.  

It's a huge time saver, but when you overdo it, you do create cliques, and a bunch of 1x1 fluff that doesn't effect everyone else. If that keeps up, alot of people won't bother reading it, and that makes it many 1x1's that sometimes cross interact.