Content attempts to display if user deleted

If a user is deleted from the system, their blog node(s) remain in the node table. Now, this itself isn't an issue, but, if one attempts to view all the blogs at once, the page will attempt to populate based on the blog table. Since it cannot match up the uid in the tuples associated w/ the deleted user, it will display n/a on the "view all blogs" page rather than nothing.

My assumption for a solution is one of two things:

1) Either remove nodes in the node table when a user is deleted, or

2) Filter the nodes to display based on users in the user table, so that nodes w/ no valid user match will not display.