As a blogger or website owner it become very important for you to disclose what you do with the data that you gather from users who visit your site.
Any time a user goes online and visits a website, there is usually a log file that records this visit. You should mention in your policy who can access this log file. If you can access the server running your website then you should disclose what you can see in the log which typically includes the internet protocol (IP) address of the user, type of browser, time of visit, referring pages and the page visit on the website. This is not limited to what I specified and you will know more about this by examining your server log file. If your site is hosted by a third party, then you will need to understand from them hat kind of log file is generated.
Disclose to your website visitors if you have advertising or targeted advertising on your site. You may not have directly used targeted advertising, but your choice of Advertising provider may be using such a method. You should follow your advertisers suggested disclosure and provide users a way to opt out of this advertising if the advertiser allows such. If you have links on your website that enable you to make some money if users click on them, then it is a good practice to disclose this information. Follow the guidelines provided by your advertiser, as they usually let you know what you should disclose to your website visitors.
Data collection and retention
Disclose to your users what you collect and why you collect when they interact with your site and how long is the collected data kept.
Disclose to your users if you do any kind of data sharing and if any other third party has access to the data collected. Some data like comments might be reviewed by an automated spam detection service. Use of Social Media Widgets may trigger cookie use and information getting logged at the third party service provider.
Changes to your policy