SEO Mistakes & Best Practices

- Links from low quality websites don't burt your rankings, unless they are unnatural.
- A couple of low quality pages won't hurt rankings if the website is good overall.
- Many low quality pages will hurt a website's overall ranking.
- A couple of good pages in a low quality website makes it hard for Google to trust their quality.
- If equivalent content is found on two websites, the one with higher quality will be displayed first in search results.
- If Google already has good content for a query, it doesn't necessarily push new equivalent content on top position.
- Algorithms use both on-page and off-page signals for rankings.
- The ratio of on/off signals used for rankings depends on query types.
- Algorithms detect excessive advertising above the fold and reduce their rankings a little.
- Google does not use the meta description for ranking, but may show it in search results.
- A keyword does not need to be in some anchor text to be taken into account for ranking.
- If information helps establishing relevancy, Google will do its best to take it into account.
- Pages which are disallowed from crawling in the robots.txt can collect PageRank.
- In general, Google does not try to find what content is within an image.
- If no text content is available for a page, algorithms try to find information from the links pointing to it.
- If a user is searching for a product, local shops will be given a preference in rankings.
- A title's content is used for relevancy.
- Algorithms check for keyword stuffing in titles.
- If adding a keyword in a title makes it look unnatural, put it in the text content instead.
- If the title of an image is in German, that image will rank in German search results.
- If a website does not rank at all, it usually is because many bad signals are detected.
- If two websites serve the same content, the one using secured communication (https) will appear first in rankings.
- In a very competitive niche, a new website will have to provide a lot of positive signals too to rank.
- A new page on a quality website will be given an initial ranking boost.
- A new page from a low quality website will be treated with caution.
- Too many obsolete pages on a website can impact its global ranking negatively.
- A lack of interaction on a web page (such as comments) can be interpreted as a negative signal.
- If people click more on ads than on entries in search results, it is interpreted as algorithms don't return good results.
- If server hosts mostly webspam sites, a good site on it may be missed or ignored by Google.
- The overall picture of a website must be above the rest to rank high.
- If a website is technically suboptimal, but users want its content, Google will put its pages in search results.
- If content is extremely new on new website and potentially relevant, it may get a bit more exposure because Google is lacking signals it already has for other websites.
- If a website rewrites existing content and brings no extra value than other websites, it may be filtered out of search results.
- Ranking factors don't always have the same weight depending on the query.
- RSS feeds don't provide ranking boosts.