Site structure from an SEO standpoint

[StreetwiseReports]

I am fortunate enough to be working with a client who is still building their website. From a site structure standpoint, what can I look for with my SEO hat as they build their wire frames and storyboard their site? I want to make sure I don't miss any components that might be helpful short and long term

[BenRWoodard]

What kind of site is it?

I would make sure the homepage has plenty of space to include content. Wether that is a content block or integrated into the different elements on the homepage.  Either way, you want to be able to add content or use images very wisely.  If there is a slider, make sure Google can view each image and the information with that image.

I would make sure the subpage's content shows up before the sidebar.

Make sure they add images wisely and use CSS whenever possible.  I've had too many sites that are all images instead of content blocks and it kills opportunity.

Navigation needs to be scrollable and doesn't include the H1 tag.  It seems as if designers use the h1 tag too often to be the main navigation in sidebar.  Watch out for that.

I'm sure others will have some more advice but those are  a few things I'd have my eye on.

[StreetwiseReports]

Thanks, it is a social networking site, much like Twitter