Remembering usernames and passwords on various sites can be quite easy. Having the same password for all sites, of course, is not safe -- in case someone breaks one of the passwords.
Here is a simple (encription) method that basically use the web address as a key to come up with a unique password for each site.
For the Password:
1) use a base password -- for instance: p@ssw#rd
2) Choose 1 or more letters from the basename. For instance, if we chose the 3rd and 7 letters of the base, that would be the first "s" and "r"
3) replace them with letters from the website name; for instance the last two letters. That would be letters "e" and "r" for blogger.com and "l", "e" for google.com.
So for the google.com the procedure given above would give the unique password p@lsw#ed.com.
For usernames, I choose between couple of different ones -- often one of my emails :-)
