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 really like seoma10's answer.

People who are really good at doing audits are usually doing audits, not making "tools".  In addition, the job of doing a really good audit has paths and tasks that would be difficult to program because they are different in every situation.

Most people looking for tools are looking for "free tools" and audit experts don't receive a good return by building free tools.   However, if you are willing to pay for a tool, then the brain of a very experienced and knowledgeable person is the best tool.

Thanks, Highland.  I didn't realize that Hayneedle redirected all of those KW domains.   That was a big decision on their part.  I know that the ones that I competed against were redirected but I thought they did that in a single niche only.   Their Hayneedle domain doesn't rank as well as the KW domains, thank goodness.

This is simply an opinion, based upon observations and interpretation.  I don't know for sure how google views this.  I don't think that anyone outside of Google knows the real answer.   If anyone has their own opinion, I would like to hear it.

If you go to Amazon.com (not the Amazon.com Business site), you will see that they have site-wide links to dozens of their other retail and service properties in the footer.  These go to Zappos, Diapers.com, Casa.com, Goodreads, Woot and lots more.  In my opinion, I believe that these are simply viewed by google as Amazon parent company linking out to their other properties.   If you go to these other properties you will note that none of them have this huge collection of links in the footer.  I see other large companies linking out to their other properties in a similar way.  But these are always going from the parent company out to their smaller web properties.

On the other hand, Hayneedle (a large muti-site retailer who runs over 200 retail domains) had severe ranking problems a couple years ago.  This problem occurred when most of their retail sites had a huge navigation on many of their websites that contained links from lots of their retail sites to lots of their other retails sites.  Hayneedle's rankings recovered somewhat a short time later, when these huge interlinking navigations were removed from their websites.   In my opinion, this was viewed by Google as a manipulative linking scheme because you had sitewide links on lots of domains, each directed to lots of other domains.  This was a huge number of links totaling in the millions.

In my own practice, I own multiple sites, but I don't place site-wide footer links on any of them because I think that it looks irrelevant and dumb.  I also do not believe that it would have much ranking benefit at all.   I believe that Google knows who owns the sites, and I believe that they have enough information to dampen your ability to promote your own sites to higher rankings with a  heavy amount of "manufactured links".  (All of my sites are connected to my personal google account through webmaster tools, so Google knows who owns all of them.  They all also have my adsense codes on them and display ads on every page.)

I don't have fear or hesitate to link from one of my properties to another of my properties if I have relevant content there that exceeds what is available on the linking page. Does that have ranking benefit?  Maybe a little.  But I don't believe that site-wides between your sites are a good idea because there is a lack of relevance.  And I don't believe that your visitors are going to investigate a dropdown menu in the footer to see where it goes.  So, I don't think that there is any reason to do it.

We are collecting reviews using ShopperApproved.  When I do searches for many of our product queries the yellow stars and ratings scores appear beside our listings in the organic SERPs.   Our listings in the SERPs look great compared to our competitors, and the results since getting those stars to appear have been kickass.  If I was in a business like yours I would get in touch with ShopperApproved and ask them to start a service named "Client Approved".  I believe that their model could be used to allow accountants, attorneys, etc. to collect reviews on the same platform, but just branding it as "client" instead of "shopper".

ADDED:  SA has a widget that you can copy/paste into the code of your website and it will display random reviews, 4/5 star reviews or hand selected reviews.  I believe that this social proof from past customers has really increased sales.  We are showing random reviews rather than hand-picking.

I used to be a university webmaster and can tell you that pages for "training events" are of temporary usefulness.  After the training event, links to the page used to market your event are removed and replaced by links to future events.  Often they have a "training calendar" page or a "what's happening on campus" page that is used for "August 2015 events" and then unlinked from the main website in September.

After the event is over these defunct training pages might still exist on the university server but they are orphan pages that have no links pointing at them.  Eventually, search engines will forget about them and drop them from the index.

So, these links have value that evaporate as the event becomes history.

Thank you, Dirk.

I always enjoy getting explicit answers from people who I have grown to trust.

Thanks!

I like the answer given by Nitin.  I agree with the speed benefits and that has tempted me to consider CDNs.

I also have a question to toss out....

Let's imagine that I have a site with very popular images or very popular pdf, ppt, doc, etc files.  If those are on my domain then google can easily see that popular images in image search are associated with my domain.  Also if people embed my images or hotlink my images or link to my pdf ppt doc, etc files then google can see that activity and popularity is associated with my domain.

Many sites have enormous investments beyond typical webpages.  Google does rank pdf ppt doc etc files.  They accumulate pagerank and have the ability to pass link benefits.  In addition, they can build brand mention popularity, as an example, people can say... "Look at this great photo on egol.com" and that mention, I believe, can provide ranking benefit, advertising value for your domain.  If people who find your image or other document instead say... "Look at this great photo on xyz123cdn.com" then that strips those benefits from my domain.  It strips type-in traffic from my domain.

Does anyone know of any testing or statements from Google that address how image and information files work when used on CDN.

Yes, both of those pages earned a position on page one.  If you launch another version of the free CAD software or free CAD templates, vector files, etc. then you might earn three positions on the first page.   I have two, three and four positions on the first page for lots of small money terms.