You have both in the page title there anyway, so it must literally be the product name you are considering changing.

I really, REALLY wouldn't do that. You already have a product image showing multiple items. If your product name was also the plural I think you'd risk upsetting quite a few customers - you don't exactly make it clear looking at the page.

Customers first. Always. What's the point otherwise? Higher rankings, but less sales.  In fact if I were optimising that page my first step would probably be to use that default overiew tab to ensure that everyone knew exactly what they were buying.

I think that your product pages are also a bit heavy on the keyword stuffing. I'm all for making things clear, but there are a lot of uses of the key terms going on.  Maybe run some key pages through the onpage optimisation tool as well: http://pro.seomoz.org/tools/on-page-keyword-optimization/new

You can do these with forwarding etc.  However that isn't the most efficient way.

What you want to do is to "park" the old domain on the new one.  In technical terms this means pointing the nameservers at the new hosting account and ensuring that there is MX record for them.  Most hosting companies do this for you or have a built in tool. It's very easy and is usually called "domain parking", "domain mapping" or "add on domains".

Doing that will ensure that visitors (and bots) visiting olddomain.com will be served newdomain.com

With that working you can just add an .htaccess rule on newdomain.com to ensure that it 301s correctly to newdomain.com . The same directive can tidy up all your subdomain woes at the same time!

This method has the least points of failiure and creates the fewest redirects. It's also generally the cheapest and easiest to manage. Win!

If you ensure that those pages return a 404 (Not found) response then Google will remove them from it's index in time.

If you want to speed the process up then you can also do this from webmaster tools. There is a guide to removing URLs here: https://support.google.com/webmasters/answer/1663419

It has been said that using the URL removal tools on a lot (read hundreds) of individual URLs might be seen as negative. However if you just have a handful then that would be the way to do it.

It looks like these are given to those who speak as part of the Barclays Entrepeneur Speakers campaign.  See here: http://www.barclaysandme.com/Seminars/Entrepreneurspeakers/P1242587029441

Very interesting Seems a little... err, uhmm... Naa.. they wouldn't

Hi SpadaMan,

Submitting articles usually means finding sites that only existing to host other people's articles, giving them a link in exchange for the article content.  That approach has always been flawed and Google has been cracking down on it as deliberate manipulation of the results.  Definitely steer clear.

If your articles are original and useful then your best bet is likely to be to use them on your own website.  Start adding them on a regular basis, and push them out through social media at the same time.  You could contact sites in your niche and see if they would take a and credit you as the author (with a link) as well.

If they aren't original and interesting/useful then your options are going to be limited.  However I'd rather opt for "do nothing" than submitting them to article directories.