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I personally think that font size does not affect SEO. Rather the right size, spacing of the words and the type of font would count for your clients staying and reading your website (bounce rate) that affects SEO.

Maybe one of the factors why the hyphenated one ranks better is that it was indexed 1st and then the non-hyphenated one was indexed after.

Having 1 line of text that only the domain name is different could be considered duplicate content by Google thus the rankings.

Well 1st you have to get good content writers... or spend more time when you're building content.

By the look of your website you are not gaining any money from adsense so remove it as the negative effects are far greater than the positive ones.

Initially start with longer tail keywords as a target  or regional.

Check Google's Keyword Tool to find what people are looking for.

But i think everything would not be as beneficial if you don't get good targeted quality content.

I would advise in getting your website reviewed  by 10-15 people(regular people/friends that could be a customer) with good questions about your website/product.

That will get you a step closer to how a client looks at your website.

Personally (as you did not offer any link to review)... I think most websites have a huge conversion problem because of  their poor design, and the client's trust of the website/busienss/product QUALITY is lost because of that.

Of course Google Analytics have a huge role in fixing the pages that show up as having the highest drop off.

Hope it helps...

Just for my own curiosity what is the drop off rate for the home page of your website.

Google sais we have to treat each page uniquely.

So the keyword density, relevance etc is for each page in particular.

That being said I think the percentage which the content of 'a' page a influences page 'b' is very very small and you would not notice it.

Keep in mind that in most of the cases the home page has the highest value(authority, juice) so would be a waste not to maximise that for some good targeted keywords.

Hope it helps.

In Google Analytics > Standard Reporting you have on the left the tab Audience and in it you have Visitors Flow....

Click on that

Just saw your website.... To start You might consider making your text  more readable (change color or bg or both) as I didn't bother reading anything

I would go this way

#2

#3

#1 (TBD - optimising the  conversion rate can be due from various factors so cart may be ok...)

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#12 #13

#7 (this can cause a temporary drop in rankings as if you redirect existing urls to new short urls

P.S. If you can show us your website I could give you more advice upon what I will see.

You're welcome. (for seomoz'ers... I've helped him privately )