1. What is .htaccess?
.htaccess is a configuration file that is uploaded to your Apache web server (it cannot be uploaded to a Windows server). It is a text file that allows you to change the way your web page works. For example, you can add directives to your .htaccess file to password-protect certain areas of your site. You can also create a classic 404-error redirect or change the homepage of your website.
You will often hear that SEO uses this to create redirects. For example, if you are redesigning your website and decide to change your URLs (say because you want to add a new content management system), you can set up persistent 301-redirects through your .htaccess file , update previous URLs. I often use my .htaccess files to shorten longer URLs (like those affiliate links) to make them easier to remember.
Be careful when using .htaccess files on your website! A small mistake can bring down your entire website! Remember, before you upload a new .htaccess file, be sure to keep your previous actions Keep it as a backup, just in case (if you only use one often, be even more careful)!
2. What is KEI?
KEI is the abbreviation of Keyword Effectiveness Index (Effective Keyword Index), which is specially developed for users' Wordtracker keyword search software. It can help you measure how competitive your keywords are, but it’s never a good approach. I recommend not focusing on KEI and looking for other ways to measure keyword competition.
3.What are supplemental results?
If a web page appears in supplemental results, Google indicates that this is also the content of their SERPs (search results pages). This does not mean that your page or website is banned or penalized. Most web pages are often very similar (or completely copied), and they may appear in appended results. Unless most of your website's pages appear there, you don't have to worry about too much of a problem.
If this happens, you must find out why and correct any issues that may be causing this.
4. What is a link farm?
There are many definitions of link farm, but I prefer the traditional one. That is, a link farm is a series of websites that decide to link to each other. It basically works through a link page that every website on the link farm uploads to their website.
Every time a new website is added to the farm, it must be added to the link page for everyone to re-upload. But in recent years, this basic idea has changed a lot.
All I'm saying is, try to keep as much distance as possible from any linking techniques. This is especially the case with planning organizations that require you to link to sites that simply do not recommend you to your target audience.
5. When is PageRank updated?
I believe that true PageRank --- Google's assessment of a page's importance --- is updated all the time. The PageRank toolbar, on the other hand, is updated every moment. This is why you can't use the green image you see in the toolbar as a real measurement tool.
6. What is a 3-way link?
3-way linking is another crazy linking trick and one that spammers always dream about when they think the typical "you link to me, I'll link back to you" trick isn't working.
With 3-way linking, when you link to some people, they link to others, and those "others" link back to your site!