"Dost thou think, because thou art virtuous, there shall be no more cakes and ale?" Sir Toby Belch, Twelfth Night, William Shakespeare

Now the Christmas period has finally drawn to a close it is a fitting time to look back on a fascinating year for corporate venturing units.

In fact the debate has already kicked off as to whether the year was overly exuberant. Marc Andreessen, the co-founder of venture firm Andreessen Horowitz told the Wall Street Journal last week his firm was "taking a step back". Given that in the last year Andreessen’s firm appears to have been one of the…