Quick rundown of my impressions:
Good:
+ "Bookkeeping Services For Your Business" – The headline is short and stands out
+ "Request an invite" – Call to action stands out and repeated on top & bottom. However, I'm not sure what this action will accomplish. Will I get access immediately? Will a sales rep contact me?
+ Listing partners and "featured in" makes you feel more important. But is Oracle really your partner somehow? (you mention OpenOffice.org) Also, perhaps add client testimonials?
Not-so-good:
- Font sizes are all over the place. Headline should only have one font size. The brief summary right under it should be bigger than the standard-sized text in benefits descriptions, etc.
- "Learn more" link is below the fold on my 15" laptop screen, and the page looks quite complete without it. Some people might not get the idea to scroll down depending on your audience.
- Instead of "Submit" and "Send" buttons, use descriptive labels like "Request invite" (bonus points: A/B test a few variations)
- Benefits are impossible to skim. The sections should be titled in a useful way, e.g. "Deep Analytics", "Low, predictable cost" etc.
- I've just noticed you have a dedicated "features" page with more content. And "prices" and some other stuff. But they're buried in the footer in tiny gray text. No one will see them. Also – they open in a new tab? Boo... But good that you have the call-to-action on those pages too.
- Front page doesn't really address why I should choose your app over something else. It is a web app... right? I'm not sure because there are no screenshots, not even a teaser. That alone would be a dealbreaker for me personally, and I feel that unless you're selling something for $1000/month and do high-touch sales, you do need to at least show me your product, let alone let me register for it without invites or contacting sales.
- Please, please don't use puzzle (or humanoid) clip art. Even if it's custom-made for you... It's such an overused concept, my bullshit detector is screaming Full alert. This is not a drill every time I see it.