For best results DIM (Do It Manually!)

Joking apart I would stay away from automatic audits, they are often incorrect and can give you a pack of trouble.

I would start by setting yourself out a strategy something like the following:-

1. Fix coding and visual errors
2. Use Moz Open Site Explorer and find which sites have the best reputation on the web (you can compare several sites in one go).
3. Research all the domain names that you have, put them in a spreadsheet, rate them for brandability, reputation and if they have any current positions worth maintaining.

By the end of this you should have a good idea of the quality and how far reaching powerful brands are.

Also don't forget social media, although not directly related to SEO it will give you a good idea is to brand reputation.

Hope understood your question correctly, if not please elaborate and see what I can do to help.

1. Avoid shared hosting (Often very limited resources)

2. I would definitely look at beefy VPS, they are very cost-effective.  (Make sure you get a managed solution)

3. Dedicated servers are good, but very expensive.

Aim to hosting the country you want to serve (Yes even though you using a CDN)

As a final note before moving everything over, migrate one of the biggest sites and test thoroughly for performance before moving the rest. When you are migrating and for a few weeks afterwards keep your old service up and running so you can quickly change back to the old location if you have any issues.

Also backup, backup, backup. Everything and at every stage (From bitter experience) 

Hope it helps, these suggestions from personal experience.

Regards

Richard

Have an online e-commerce store and need to start on keyword research.  There is a round 1000 products, not very many all things considered but a very big job to do manually.

Do you know any tools that could speed it up?

or

Process/method that could help?

Thanks

Does CDN impact on SEO or not?

There seems conflicting ideas as to whether they impact positively or negatively, I realise that if the page loads quicker this is a good thing for SEO and usability of course.

Does Google see CDN as just cheating and a get-around for not doing the work from the ground up and using good hosting etc?

Do you have any direct experience?

All constructive input much appreciated!

The way I would do it is to search for a super long tail keyword, copy a large bunch of text of the page and paste it in Google (you may need to pass it through a notepad to strip out formatting).

Afraid I don't have an answer answer to your question regarding info and site parameters.

I would trust the mega long tail keyword option more, You have to remember how dynamic Google searches are, even from one PC to another on the same premises.

Hope it helps.

This is a common problem, you have three options:-

Attempt to get the links taken down (by contacting the Webmaster)
Use the Google Disavow Tool tool
Recreate content on the site

To do any of the above as you mentioned you will need a list of URLs to fix, I would recommend using Google Webmaster tools & Moz Open Site Explorer.

You can also use Google search engine and search for the following:-
"-site:yourdomain.com yourdomain.com"

Remove speech marks

Hope this helps.