Sue, question regards the idea of using a weblog to manage “static” about, terms, privacy, etc. pages if you don’t mind.
What I’ve tended to do is setup a template group then create templates for each page rather than set up a weblog to manage the content. What do you see as advantages of using the weblog method? I can see:
- more client manageable formatting options
- internally searchable
- possibly run off one template using url_title?
versus advantages of “hardcoded” template method:
- revision history
- less steps to edit
- faster/easier setup
Back on topic.
A big plus for me was being able to rename “index.php” to the name of a templategroup and eliminate a segment of the default URI all together. Basically I create a generic or descriptively named templategroup and run most of the site out of there. I’ll create other templategroups for specific areas of the site if I need to but I try and focus more on a short URI (with url_title they can get loooong).
I use .htaccess to point my homepage to a specific template which gives some more flexibility. In my case the code is something like
directoryIndex competitions/home index.php index.html
That means http://www.winstuff.co.nz/ is magically and invisibly showing http://www.winstuff.co.nz/competitions/home/ while my EE “homepage” is http://www.winstuff.co.nz/competitions/index/
For global templates I do the same as others - create a template group named “z” then create all the global stuff and pull it in using
{embed=z/incMast}
{embed=z/incMenu}
{embed=z/incMenuOnline}
Once you’ve decided/designed the layout of your site being able to make new templates by duplicating existing ones is a really fast way to make a complex site.
I’m still toying with setting up a personal blog (and moblog) on a different domain using the same EE install, I have it set up exactly as above as well and it’s really just waiting for me to buy a new fandangled cameraphone to make sure it works as expected and have a bit of fun with 
etosha, I have a similar approach but I’m trying not to limit myself by saying this template group is this site or this templategroup is this weblog. If it makes sense to create a new templategroup and separate a bunch of pages I’ll do that - it means I’ve got multiple weblogs spread across multiple templategroups and templates spread across multiple domains - which means the backend isn’t so tidy but the frontend (users/search engines) is pretty good looking.
When you say your templates “tend to be fat” do you mean you have a lot of templates under a few templategroups or something else? My template list is a mile long, I think I will eventually set up different users for myself with different privileges to manage things a bit. “PHP cares about how to show a particular content” - do you mean EE tags or something special with PHP? Just curious and looking for new ideas for my sites 
It is probably a good thing™ the site I play with EE on is a side income/spare time thing and not mission critical as I do a far amount of experimenting
It’s definitely given me a nice foundation on which to build the next complex CMS style site I need to do.
I’m typing this on my powerbook bouncing around in the back of a bus, apologies if it’s a bit disjointed or rambling 