Any recommendations re. BLOG software?

[GeorgeTH]

For a non-adult project I thought to use some Blog Software - but gee - the choices are confusing...

I found this great table comparing some (most) of them, but still don't know any better?

Anybody here who can recommend a particular piece of software, preferably one which allows for
multiple users (not multiple installs),
maybe password protected pages,
picture upload and thumbnail creation (for idiot posters),
and easy to install and maintain (for the idiot behind this keyboard - must be me)

From the table mentioned above I sort of tended towards Blog CMS - anybody knows about it (and about installing/running it)?

Ah - did I mention 'free' would be a clear advantage?

Thanks!