Already answered heather t.: Iphone pop up scam
Your site exists to generate revenue through the advertisements it hosts. As I explained in that Discussion, those advertisements and the malware they will undoubtedly carry and subsequently infect Mac users are inserted by your blog hosting service, in accordance with the terms and conditions you provide.
Quoting from your own website:
"Google, as a third party vendor, uses cookies to serve ads on ... Google’s use of the DART cookie enables it to serve ads to your users based on their visit to (your website) and other sites on the Internet. ...
These third-party ad servers or ad networks use technology to the advertisements and links that appear on (your website) send directly to your browsers. They automatically receive your IP address when this occurs. Other technologies ( such as cookies, JavaScript, or Web Beacons ) may also be used by the third-party ad networks to measure the effectiveness of their advertisements and / or to personalize the advertising content that you see."
For which you predictably disavow all responsibility:
(your website) "has no access to or control over these cookies that are used by third-party advertisers."
I'm sorry to be so blunt Heather, but as it is, your website is practically indistinguishable than those that exist to serve adware and the widespread misery it is notorious for causing.
Follow the money. Works every time.