Some webmasters mistakenly believe that the search query text should appear as much as possible on the site to ensure a high search engine rankings. This tends to negatively affect the text: an excess of keywords makes content complicated and difficult to read. Our algorithms lower the rankings of sites where the presence of such texts negatively impacts the user experience.
We recommend orienting your written content around the user experience, i.e. providing information in a pleasing and convenient way, as opposed to taking advantage of search engine indexing bots.
After the texts have been rewritten or deleted, you can click I've fixed everything in the Security and violations section in Yandex.Webmaster. Restrictions in response to this kind of violation are usually lifted within a month. The violation notification will disappear when the restrictions are lifted.
You can click I've fixed everything for the same site again after one month. After this, to avoid misuse of this button, the waiting period will increase and may be up to three months. So we recommend clicking this button only when you are sure that your site doesn't have any more violations.
If several people have management rights to your site, a specific person should be delegated to re-send the site for checking at a particular time. None of the admins will be able to use the button again for a month.
If you are absolutely sure that this violation doesn't concern your site, then we recommend clicking the button.
At present, Yandex.Webmaster is not able to provide this information. Usually, text over-optimization is pretty obvious. Try putting yourself in the shoes of a visitor to your site and read your texts. Are they readable? Are they written for humans? Do they contain frequently-repeated keywords? Make sure that there aren't any overused words.
If your tags help the reader navigate your site or are there for design or convenience reasons, then they won't bother the robot. If, however, the tags are pointless and clearly only used to try to unfairly influence search engines, then your site may face restrictions.
We certainly understand that many sites repeat words, and we design our algorithms accordingly. If this repetition serves the user and is not an attempt to fool search engines, then a violation will not be marked.
If the notification disappears, it means that our algorithms no longer see the violation on your webpages. It might take some time for these changes to show up in search. This usually happens after one or two updates of the search engine database, which takes about two weeks on average.