"Subdomain" for new site section?

[DavidO]

I'm adding a new section to my static site that will act sort of like a blog with frequently updated content that I can put out on RSS.

Why don't I do a real blog?... you might very well ask. Because I'm already working at my limit and I figure I can get most of the advantages of a blog by adding it to my existing website.

People have recommended I do this by adding a subdomain. But what the hell is a subdomain? My research shows that it's simply a regular domain in the domain.com format.

So my real question is this: What format should I use for adding this new section to my website to get the most SEO advantages?

Should I use a new directory, i.e. www.mydomain.com/newfolder/news.html

This way I could add as many new pages as I want while organizing them all in a suitable directory.

Or should I just add new pages to the root domain as needed?

I know other people have used this "blog" strategy on a static site so any tips would be most appreciated!

[wezzley]

I'd go for the new directory and avoid a sub domain like example.mydomain.com

Because as far as I understand SEO wise the subdomain would be treated as a diff domain & your links going to the subdomain will not count towards the regular domain very much if at all.

[blackrosezy]

Are you new website is related to the old domain? If yes, just use directory else use subdomain.
e.g :

related :
seo.com
seo.com/link

not related:
seo.com
funny.seo.com