You should not use more than one H1

http://perthseocompany.com.au/seo/reports/violation/the-page-contains-multiple-h1-tags

Having said that, with HTML5 and the use of the

tag, It has been suggested you can use more then one if they are in different articles, but Bing or Google have not stated an opinion on this yet

If you look at a some of the site links you see on google, that is the deep links listed under the main links, you will see that they list subdomains as sub links. WMT recently stated counting links from subdomains as internal links, make of that what you will, but Matt Cutts has stated time and time again that subdomains or subfolders will not make a difference.

There is no set ration but clean code is important, large amount sof script, css,  json and viewstate can affect your SEO, usly messy code has errors, many of todays CMS packages create messy code with errors. Seach engines have to try to work out what is visisble to the users, this is no easy feat when you have mess code with errors.

Herre a few errors that Bing picks up, no dount Googes does also

http://perthseocompany.com.au/seo/reports/violation/the-page-contains-a-large-number-of-cascading-style-sheet-(css)-definitions

http://perthseocompany.com.au/seo/reports/violation/the-page-contains-a-large-amount-of-script-code

Well I guess that is good news, since tools is a keyword that was never going to convert anyhow.

Your heeading and side looks fine, nice and clean professional looking, but as i said below the actual main content looks a bit hard sell. But having said that 40% for your top keywords conflicks with the spammy idea.

as for radical marketing, well i can see that getting some wierd sorts of clicks, It may be you have nothing to worry about

i have to agree, its not spammy in content, just seems to look like spammy sites from memory.

its in the main content area, cant put my finger on any one reason why, but maybe play with some fonts of stuf, tone it down a bit. It was my first impression also.