The Deliverblackjohn.com site is not to be trusted. This is a bogus Web page that will attempt to hijack your Web browser notifications. The operators of this shady site generate cash by spamming their visitors with unwanted advertisements. We assure you that there is no need to visit this dodgy page as it hosts no valuable content.
When the users visit the Deliverblackjohn.com page, they will be asked to complete a fake CAPTCHA that is meant to prove that they are not machines. To prove that, the user will be asked to click on the ‘Allow’ button displayed on the page. However, doing so will provide the Deliverblackjohn.com page with permission to display Web browser notifications. Then, the Deliverblackjohn.com website will begin spamming the user with unwanted advertisements. It is likely that this dubious page works in cooperation with dodgy advertisement networks that are likely to promote overpriced products and low-quality services. This is why it is best to ignore the advertisements delivered by the Deliverblackjohn.com site.
If you are receiving advertisements affiliated with the Deliverblackjohn.com website, you can put an end to the spam easily. Open your Web browser settings and revoke all the permissions given to the Deliverblackjohn.com page. If you want to avoid finding yourself in a similar situation in the future, avoid browsing untrustworthy websites like the Deliverblackjohn.com page.