It's not necessarily the "white space" or "less text" that is throwing me off, rather, it's the arrangement of boxes on the page.
If you're looking to loop in the entire family, I'd try to get the most important stuff above the fold somewhere (i.e. the awesome overview video you have). I've watched the way my parents use the web and interact on their screens, and the first thing they'll look at is something right in front of them - in your case, show them the overview video above the fold while keeping your core message. Example arrangement: http://www.campfirenow.com/?source=applist
So, some other thoughts along the "aha" factor on the page:
For, the "Why Use Ramamia?" section alongside the video, there are some points here that don't fit IMO:
"Get started for free in under 5 seconds" - That's not a reason to use the app. I wouldn't place this in the why section.
"Easily share photos, events, messages, and interesting links" - How? Can you tell me how in one a line point?
"10x easier to use than other family sites" - Again, how? Also, what's a "family" site in this sense?
"More private than using Facebook or MySpace" - Just covering all areas here, but do you think your target audience will know FB and MS well enough to showcase it here in this point?
"Add something and your entire family is updated" - Maybe say "anything" instead of "something" here. "Add ANYTHING and your entire family is updated IMMEDIATELY"?
If you're looking to loop in the entire family, I'd try to get the most important stuff above the fold somewhere (i.e. the awesome overview video you have). I've watched the way my parents use the web and interact on their screens, and the first thing they'll look at is something right in front of them - in your case, show them the overview video above the fold while keeping your core message. Example arrangement: http://www.campfirenow.com/?source=applist
My $.02 at first glance but looks/feels great!