Daily Wrap up July 6 - Tech.

<strong>Facebook 2009 revenue pegged at $500 Million</strong>

Netscape founder Marc Andreessen said in an interview that he expects Facebook's revenue to be in excess of $500 million in 2009, and estimates that in five years,&nbsp; it'll be well into the billions.

<strong> DOJ may bust up AT&T's exclusive deal with Apple's iPhone</strong>

The Department of Justice has begun an initial review of the U.S. telecommunications industry to determine whether the two dominant players - AT&T and Verizon, which together control 90% of the U.S.'s landlines and 60% of its 270 million wireless subscribers - are abusing the market power they have amassed in recent years.

<strong>Microsoft warns of serious computer security hole</strong>

&nbsp;Microsoft Corp. has taken the rare step of warning about a serious security vulnerability it hasn't fixed yet. It affects Internet Explorer users whose computers run the Windows XP or Windows Server 2003 operating software, the company said Monday.&nbsp;