Important SEO Factors that can harm your Website Performance

An indicator of poor quality site can acquire many forms - often in areas such as content and backlinks. However, most of the technical components are usually omitted.The quality of website which is being spoken about here has nothing to do with look and feel. In essence, Google has decided not to rank your site in the search engine results pages (SERP) if the site does not meet their quality measures.
Once you get enough of these PQIs, you can get website penalty. This penalty can be an algorithmic filter at page or keywords level. The penalty that you receive would be manual and often the most troublesome to recover.
Following are some poor quality indicators for any website:
1. Comment SpamOne of the latest sanctions that people come across in their mailbox is unwanted comments. You know that the person who posts these annoying links at the bottom of your forum or blog. This is one of the latest ways to get Google Penalty. It can take relatively few cases of spam comments to end with a manual penalty.
2. Ad CreepDoes your website have so many ads? This is for the information to all that Google penalizes those websites which have unnecessary ads above the fold. Reason behind this penalty is that, an excess of ads on a web page poorly affect the user experience. Furthermore, it also raises the load time of a website which is again not user friendly feature.
3. Internal LinkingYou must have looked at pages that have more than 400 + internal links. Excessive internal linking is also not decent practice. Make sure your internal links are suitable to the content and aren’t separating your web page into several sections. Separating your page into several pieces of unrelated information will make it troublesome for the spider to categorize the content of your page.
4. Crawler IssuesIf you really want to optimize your website well, then you will have to use Webmaster Tools proficiently. Both Google and Bing provide Webmaster Tools which will provide you really useful info for your website for instance Crawler issues, indexing status and so on. In Google Webmaster Tools, you can view various error pages such as 404, 500 or any other error pages. By identifying these error pages, you can always fix them.
If you don’t fix these error pages, then you can definitely move towards a site penalty.
5. Duplicate Content - Title/Meta ContentAfter Google Panda, most of the people are aware about side effects of Duplicate Content on Website. However, they often forget the fact that having duplicate Meta tags i.e. Title, Description are also considered as Duplicate Content. If you use duplicate Meta tags on numerous pages, then your website quality is surely at a risk.
6. Page SpeedPage Speed is one more quality indicator for your website. A website which loads faster is known to be more user-friendly. And we are very mindful that Google always speaks about making a website for users not for search engines. If your website takes much time to load, then users will get irritate and they will get away from the website. This will increase the bounce rate for your website that is not good for any site.
7.  MalwareAnother critical indicator for poor quality websites is “Malware”. If Google finds malware in your website, then it will associate a warning message like “This Site May Harm Your Computer” along with your website URL appearing in search results. Any visitor who views such warning will never open such link. This can severely impact your website traffic and as a result search engine rankings too. If this problem is not fixed in time, then your website can be a subject to penalty from Google.
In order to check whether your website contains malware or not, you need to go to Webmaster Tools of Google. If there is malware in your site, then you would have been given a warning message in webmaster tools inbox. Once you are sure about the removal of malware from your website then you must send “Reconsideration Request” to Google. 
If Google discovers that malware has been removed, then the warning which was posted by them will be removed.