First, let me define the word "holy" as told by my dictionary; "Morally and Spiritually Good", ok lets see what is holiness; "Doing and Keeping Holy Acts - Getting Far From Sin"
This means that everything that your conscious told you its clean is holy. Yes it may be but when we come to internet holiness, its not. Why? You might copy a content from a top blogging site and thought to yourself as very good. Your conscious is saying "yes its good" just because you need that content on your blog. But the internet is saying no, backed up by the american copy right policy. (You may be jailed). That is when your brain will say it is no no holy.
How Unholy Content Can Affect Your Blogging Career Negatively
*. It is just very simple. Unholy content, such as copied, stuffed with keywords etc. Can never reach the top search engine result and stay permanently. Whether it stands it will definately fall - You will lose this rank in just less than 48 hours.
*. Nowadays, the search engines especially google (the best) are becoming more intelligent. So unholy content can be dictated easily.
*. As google continuously dictates your spam unholy content, you are going to get banned - which is bye bye to blogging just because of holy content issue.
*. When we come to writing about adult content on your page. You knew it within you that you are committing sin. That is, if you are an adsense publisher or you are just blogging for sites that say "holy content". For example, it is the short cut to get banned by blogger.
*. Is it holy to stuff your page with keywords? You may say yes or no, all is good for you but google hates that. But it is under one condition; If you think you can do without the people coming from google, then you may go ahead and do what you like. Getting banned by google may not be your problem, but for me it is a problem - I only know the law of google because it is my favourite place of getting traffic. This is why I knew much about google's law. If you committeed sin against google, then you may be ruining your blogging career. Why? 99% of bloggers are enjoying google and almost 80% percent of their traffic is from google. And you know as usual; Search engine traffic is the most qualitative traffic. So, you won't get that unless you got that holy content. So the answer is, just write what you like with your own hands and brain - this is what we meant by holy content.