devu

This plugin / widget substitutes the default “Links” widget. If you are a SEO specialist, you already know how much important is the rel=”nofollow” attribute in outgoing links. If you are not: links passes part of the PageRank the page has gained to their destinations. Do not let the blogroll section wasting it by donating your pagerank to external sites.
Once installed, under “Settings” -> “SEO Blogroll” you can create how many link boxes you like, each with its own title. Every link box can contain how many links you like. For each link, you can decide if it should have the nofollow attribute or not.
Once your links are ready disable the traditional “Links” widget in “Appearace” -> “Widgets” and activate the new SEO Blogroll.
If your theme supports widgets, you don’t need to change a single line of code, just install the plugin and start using it!
Please report any bug (or enhancements requests) on the plugin main page: <a href="http://www.francesco-castaldo.com/plugins-and-widgets/seo-blogroll/" title="Seo Blogroll" rel="nofollow ugc">Seo Blogroll</a>.
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More information: http://www.francesco-castaldo.com/plugins-and-widgets/seo-blogroll/

SEO Blogroll

Lets you decide which blogroll links have the nofollow attribute. Don't waste link juice!

adenergizer

Adenergizer helps you serve ads.txt and app-ads.txt for your WordPress website without much doing. 
It helps you create and manage ads.txt, app-ads.txt from within WordPress admin area. 
By installing and activating this plugin you’re ready to serve these files without much effort, 
as no need to manually create ads.txt and app-ads.txt on your server. Adenerngizer automatically 
serves these files for you and you can control what content is served.
With Adenergizer you can specify clear instructions to web crawlers which part of your website they are allowed to 
access and can improve transparency for your buyers. By serving ads.txt and app-ads.txt you can make sure that your 
content and products are known to search engines, so the user can easily find them. It also help protecting your data 
and content which is not meant to be visited by crawlers.

Ads.txt and App-Ads.txt – AdEnergizer

Create and edit ads.txt, app-ads.txt files from the convenience of admin dashboard.

SEO Blogroll vs Ads.txt and App-Ads.txt – AdEnergizer