Logo designed by employees

Hi all,

Some time ago, i learned
of a local company (with international
business) that asked their
employees to design their new logo.

I could not tell if this was
a human resources management
department strategy to integrate
this human group or a recommendation
of the Account department to
save money.

My question is :
Is common for companies to
ask their employees to design
their logo?

Could you point me to some articles
that praise or reject this strategy?

(By the way, do not ask me to post
the logo. of this company)

Al