Given that you've said your ultimate aim is for users to purchase things from your affiliates shop, you are really measuring the wrong thing by measuring page impressions.

Imagine a scenario where all users arrive to your site at an article page. At the end of the article page there is a link to buy a product. This link takes the user to your affiliates shop where he/she then buys a product. The user has visited exactly one page on your site (1 page impression) and earned you £x in revenue.

The above example would be more valuable to your business then say if they landing at the same article page, read 5 other related articles and then purchased nothing.

If the website makes money through selling affiliate products, you probably want to be measuring the number of sale made vs. the total number of unique visitors (conversion rate) or the number of pages a visitor reads before purchasing from you.

Don't measure the wrong statistic. make sure you know what you are trying to achieve and measure that!

One of the most important factors on a PPC landing page is message match. You must ensure that your ads message is cleearly repeated on your landing page.

From an SEO perspective, this means making sure that your page title and h1/h2 tags align with the messaeg you are putting across in your ad copy.

Something I have been working on is having my ad headline as the H1 on my landing page, and my ad body as a H2 on my landing page. Then having the title of my page be something like "%Ad heading% | My Site".

It is definitely worth trying this out as part of your A/B testing. some of my landing pages using this technique are getting conversions around the 8% mark.

It is also worth trying to get your message match in your URL title as well. If you are ad heading was "Top 10 SEO Tactics" for example, why not have your landing page URL be something like http://www.mysite.com/top-10-seo-tactics.

On another note, I don't think you would need to create 100 different pages for 100 keywords. you could have just one page that does some text replacement to ensure you keep your message match. I usually create a landing page and then replace some tags within the page depending on what ad users come from. This is pretty simple to do in .net/php and will save you recoding up lots of pages.

Would something liek this work:

RewriteRule ^-c-(.).html(.)$ category/$1.html$2 [R,NC]

I've not tested it, nor do I claim to be an expert, but I think it will work for what you're tryign to acheive - e.g. -c-25.html becomes category/25.html

I have gone through this same process recently.

FireBug's NET tab, the page speed plugin and Yahoo YSlow plugins were the way to go.

I had a page load time of about 10 seconds before optimising. I reduced this to about 6 seconds by doing the following:

• Using different domain names (e.g. static.mysite.com, static2.mysite.com, static3.mysite.com) to increase parallel downloads of CSS/images etc.
• Gzip
• Reducing size of all images

I then managed to decrease this further to about 1.5 seconds by changing server hosts.