How do you all keep track of email addresses and username/password of all blogs / social bookmarking sites / webhosts / etc ????

Does somebody made a nice structure for an excel file ?

You need to :
1) keep your email addresses alive (so visit minimum once a month)
2) see if all your social bookmarking accounts are still alive
3) see if you lost some free webhosting
4) see if you lost bloggers ?
etc.

Let me know

Tasari