что же это? что такое issues? речь о SEO, ключевых словах gen.

[hungerhope]

The system reveals the potential lift generated from on-page optimization (i.e., on-page recommendations implemented by SEO marketer) relative to keywords for which recommendations have not been followed, and keywords that have no ON-PAGE ISSUES

The three keywords segments are the following:
Keywords with on-page optimization: Keywords which have ON-PAGE ISSUES but are being resolved by SEO tactics (hence the issues are shrinking).
Keywords without on-page optimization: Keywords which have ON-PAGE ISSUES but are not being resolved by SEO (hence issues growing).
Keywords with no ON-PAGE ISSUES

[Rengo]

On-Page SEOSearch Engine Optimization (SEO)
What are the most important on-page SEO issues to check and monitor while launching a new project?
1. The HTML title. This is the most important tool at your disposal. Make sure your keywords are in the title.
2. Meta description. While this doesn't contribute to your ranking, it shows in your search results, so optimize if for your visitors to entice clicks.
3. Site architecture/hierarchy. Make sure your site is crawlable and every page is linked to so Google can find it. Include a sitemap.
4. Alt tags of images. Put your keywords in alt tags to give them a bit more weight.
5. H1 tag. Include your keyword in this tag.
6. tags. Put your keyword in your text a couple of times in strong tags.
7. Related content. Make sure to include words and phrases that are closely related to your keywords.

[alk]

http://searchenginewatch.com/article/2132155/On-Page-Optimization-Not-Dead-Long-Tail-Keywords-Increase-Rankings-Conversions-STUDY
http://www.seomoz.org/tools
все-таки это проблемы с нахождением и попаданием на нужные страницы по ключевым словам