we have A LOT of old blogs that were not well written and honestly are not overly relevant.

Wow.... it is great to hear someone looking at their content and deciding that he can kick it up a notch.  I have seen a lot of people would never, ever, pull the kill switch on an old blog post.  In fact they are still out there hiring people to write stuff that is really crappy.

If this was my site I would first check to be sure that I don't have a penguin or unnatural links problem.  If you think you are OK there, here is what I would do.

1. I would look at those blog posts to see if any of them have any traffic, link or revenue value.  Value is defined as... A) Traffic from any search engine or other quality source,  B) valuable links,  C) viewing by current website visitors,  D) traffic who enter through those pages making any income through ads or purchases.

2. If any of them pass the value test above then I would improve that page.  I would put a nice amount of work into that page.

3. Next I would look at each of those blog posts and see if any have content value.  That means an idea that could be developed into valuable content... or valuable content that could be simply rewritten to a higher standard.  Valuable content is defined as a topic that might pull traffic from search or be consumed by current site visitors.

4. If any pass the valuable content test then I would improve them.  I would make them kickass.

5. After you have done the above, I would pull the plug on everything else.... or if I was feeling charitable I would offer them to a competitor. 

Salutes to you for having the courage to clean some slates.

Arbitrageurs killed the penny Adwords clicks about ten years ago.  Today, I think that you will be lucky to find any clicks that go for less than ten cents each.

Today you can find a SERP with huge traffic and no ads.  You will think "I can get cheap clicks there".  They do not exist.  Google will run your ads for a few thousand impressions and then force you to bid an amazing price.

I run my buttons through forms.  Thus no links and no "product pages" generated by the shopping cart.

This enables me to produce most of my sales from minor category pages with multiple products or multiple varieties of single products.  I believe that these single pages compete better in the search engines that four or more separate pages.  I also believe that they result in more items being added to the cart - because the customer sees the variety.

Eliminating all of those product pages gives me a much smaller and more compact site that I believe competes better in the SERPs.  It also enables me to produce custom product pages that are not possible through the cart's product page template.  They can be optimized like finely crafted arrows instead of being made by a cookie cutter program.

If you don't know how to produce form code, ask your cart provider for help.   My code looks something like this.

<form action="https://secure.example.com/cgi-bin/addtocart?MERCHANTID=EGOL&ADD=id-tool-225" method="post"><input type="<a class="attribute-value">image</a>" src="/add-to-cart.gif" width="<a class="attribute-value">105</a>" height="<a class="attribute-value">35</a>" border="<a class="attribute-value">0</a>"  align="<a class="attribute-value">middle</a>"></form>