What Is Your Definition of Bad Writing?

What is your definition of bad writing? What are some examples of bad writing you have encounter and why do you feel these writing deserves to be defined as bad?
Is there any particular technique or way of writing that you think writers should avoid? At what point is writing beyond the help of constructive criticism?
Jerry Nelson is an American freelance writer and photojournalist and is always interested in discussing future work opportunities. Email him at jandrewnelson2@gmail.com and join the million-or-so who follow him on Twitter @ Journey_America.