One thing to not do with your excess cash:
From the QCOM release today:
The distress in global financial markets has continued to suppress the value of our marketable securities portfolio. As a result, in evaluating the recorded values of our marketable securities at December 28, 2008, we determined that $388 million, or approximately 3 percent of the recorded values of our cash, cash equivalents and marketable securities, were other-than-temporarily impaired. In addition, at December 28, 2008 and January 23, 2009, we had net unrealized losses on marketable securities of $1.1 billion.
Most corporations maintain liquid cash in low risk, short term securities - not marketable securities that can suffer $billion losses or complete write-offs (QCOM's description of "other-than-temporarily impaired" is hilarious). Hopefully, InterDig will realize their talents do not include investment management.