Poros.nu

A fine site: plenty of photos and text. Well worth a look.

Poros Island

A site with a reasonable amount of information, but sadly let down by the advertising via pop-up windows.

Vacation.net

Page with a couple of reasonable photos and some basic text.

Greekislands.com

Page with a nice photo of the town waterfront. However, the text is not up to much.

Dilos.com

A couple of paragraphs of text and a photo that doesn't give much away.