The recent Adobe hacker-fest has again brought up the subject of passwords so here is my recommendation...
There are a full set of password rules and suggestions that are already widely recognised as being crucial for online security, see here for a great article: http://www.thegeekstuff.com/2008/06/the-ultimate-guide-for-creating-strong-passwords that pretty much says it all.
However, particularly relevant for now, you need to ensure that your passwords are always different from each other, if your Adobe password has been compromised you don’t want that same password to have been used for your banking.
Take some time to think about the quality and diversity of your online passwords would all your online accounts fall domino fashion if one was breached?
If you're having difficulty in tracking all those passwords consider a password manager, there are a number of different product options. I use https://lastpass.com/ which is available in a free version or paid if you want the smartphone apps as well ($12 per year).