This was very informative and very valuable post.It's pertinent that one keep his or her password safe. I believe after creating an account the next important thing to do is to have a strong password in place but if one had put out a weak or easily decoded password then changing it is mandatory and of course this post will come in handy. I always try to have a stronger password any time I deem it fit to change my password or I need to have a new one.
Security of password can make one change his or her password and I always advocate the alpha- numeric password style.This has to do with mixing up uppper,lower and symbols in one's password.This is great because it will be difficult for one to guess such password.
So password change is necessary for more protection.