Virus

I feel tired.  After two days spent largely asleep I still feel tired.  I still have the attention span of a block of cheese.  I've GOT to get back to my HTML class.  It's not fair to go offline when they're getting to the interesting bit.

What's the point of viruses anyway?  What useful purpose do they serve?  Even wasps have a purpose, as the garbage disposal unit of the garden, but what do viruses do other than cause strife?