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From a UX point of view, it's a little deceiving that the link says 'Full Description', but then it's not any longer than the snippet up by the button. This could have a minor impact on SEO. I'd either shorten the snippet, or expand the description below in the tab. Overall though, from an SEO perspective, this isn't much different than you'd see on Amazon where they have the bulleted list up top, then a written out description below.

Hi Joe, On one hand, DA and PA are metrics that are calculated primarily with the links that point to that page/domain. Take a look at these resources: Domain Authority & Page Authority Metrics - Whiteboard Friday What is Domain Authority? - Moz What is Page Authority? - Moz On the other hand, a certain PA/DA doesn't assure nothing in Google SERPs. A PA of 25 may or may not be a "low" PA. There are lots of cases that have fewer PA/DA than their competitors and have better rankings. In your case, I wouldn't worry much at all. Regarding the other matters: Domain change and 301 redirects. Yeap, it could affect some rankings, it was done too long ago to analyze its impact now. Links in OSE. Remember that Moz updates once a moth or so its link index and doesnt crawl the entire web, it may miss some of your links. My opinion: use other tools too (such as ahrefs.com, majestic.com or other). Words in descriptions. (Im asuming that you are referring to meta descriptions) There is no exact amout of words. Take a look at these resrouces: New Title & Description Lengths for Google SEO in Search Results - Moz Title Tag Length Guidelines: 2016 Edition - The SEMPOST Significant Change to SERPs: Google Extends Length of Titles and Descriptions - SEJ Hope I've helped. Best luck. GR.

Q: The example I gave earlier "www.domain.com/greeting-cards/occasions/birthday-cards/" would this be considered keyword stuffing if I am targetting the keyword "birthday cards"? A: Absolutely not. If you saw a real keyword stuffed URL you'd probably laugh out loud at the fact that people are still writing URLs like www.bluewidgets.com/widgets/blue-widgets/best-blue-widgets/top_blue_widget.html . Your example is just a clear URL representation of the structure of your site. Q: Keeping in mind this taxonomy would it be better for my URLs to follow this pattern instead? www.domain.com/greeting-cards, www.domain.com/occasions, www.domain.com/birthday-cards? A: That depends. Are birthday cards a form of greeting cards? Are occasions just a way to categorize greeting cards by occasion? If so, they should probably go under the /greeting-cards/ directory. Q?: All of our product pages have URLs formatted as follows /product/product-name. A: Good. I'd keep them like that. You don't need category folders in the product URL.