Two Plus Two Equals What?

Both the NY Times and the Washington Post have interesting articles on the NYSE-Archipelago and Nasdaq-Instinet Deals.

Two Plus Two Equals What?:

Highlights:

* "Former SEC chairman Arthur Levitt said he thought the NYSE's new structure would improve the independence of its regulatory arm, not weaken it, by fully removing it from any influence by brokerage and trading firms.

'By breaking up