I think that job seekers should keep a few things in mind:
There are no guarantees.
A full-time job can turn into a part-time job at anytime.
A part-time job can turn into a full-time job at anytime.
In this economy, finding ANY job is extremely difficult.
Many people are working 2 and 3 part-time jobs to make ends meet.
If a person has no financial worries, then s/he can afford to be picky. Otherwise, take what you can get and keep looking for something better.
I hope than answers your question.