Titles and Descriptions - Useless or Valuable?

[swedguy]

Question 1:
I put it on all sites, but I don't spend that much time on it.

Question 2:
On the places where have title and description listed after each other it adds up to around 100 characters before there's a line break on 800x600. So if a submitted title + description is over 100 chars, I edit them