Like most of us, Q's cryptic "D5" has been confusing us since it hit the boards. My mind has run at high rpms in neutral about it a lot.
I think we got a clue with Q's SEC_TEST_D3 posts a while back.
I noticed that there is an actual name for the "+" symbol in typeset: dagger.
So if we treat it with Q's love of acronyms, it could easily be D.
Soros: + = D1
Rothschilds : ++ = D2
House of Saud: +++ = D3
And Saud was in the news shortly after the D3 post.
I think we are seeing an ascending power structure. Higher the number, higher the rank, so D5 would be two levels of control over Saud. They, and Q, know who it is, hence why we see so much shit hit fan after D5 pops up in a Q drop.
Anyone with a free shovel want to take a digg? My gut says Payseurs, but nothing to back it up.