Dear joefreddy:

There is no specific weight per se, but it is important to have solid reasons for your job switches. Three moves in five years is not unusual these days but could still cause some to ask you questions in the interview. Have a good answer prepared that focuses on positives--do not be negative about former employers or give reasons like "I did not like my boss". Surely you moved to a new job because it was a better opportunity or a step up in some way?

Good luck!
Lisa