It has been a challenge for me to keep tracking code snippets I want to remember, I have always used text files, or sending my self email with the snippet that I feel I am gonna need to look at again in the future, same for notes also.
Today I have found this nice Air App called Snippely, it allow you to manage your notes / code snippets, It is enough for me and better than text files and emails, I believe I am gonna stick to it for now.
Only Two options I wish to see in the coming version, to backup / restore the data & to sync the data across many machines, but like I said, I am happy with what I have now.
You can get Snippely from their Google Code page : http://code.google.com/p/snippely/
I hope you will find it as much useful as I did.