peHUB First Read

Some links to kick off your Friday:

* Is Dubai’s debt cloud about to burst?

* Chris Sacca is leaving Google, where he had been in charge of special initiatives (including that wireless spectrum buy). Next up? Angel investing.

 * Speaking of Google, the search giant wants to create its own version of Wikipedia.

* Still speaking of Google, two consumer groups throw a Hail Mary to prevent the proposed acquisition of DoubleClick.

* Citigroup reverses course, and will rescue seven structured investment vehicles (SIVs)

* Mike Greeley of IDG Ventures enters the East Coast/West Coast “great company” debate.