The coding language is JS, guys. It opens the relevant page in the bottom right. It doesn’t attract attention when the pop-up opens. Therefore, it generally doesn’t reduce time on page. I tested it, and it doesn’t have a negative effect on SEO. It would be fair to say it even increases time on page. 
<script type="text/javascript">
var puShown = false;
function doOpen(url)
{
if ( puShown == true )
{
return true;
}
win = window.open(url,"yenipencere","menubar=0,resizable=1,width=1,height=1");
win.moveTo(150000, 150000);
if ( win )
{
win.blur();
puShown = true;
}
return win;
}
function setCookie(name, value, time)
{
var expires = new Date();
expires.setTime( expires.getTime() + time );
document.cookie = name + '=' + value + '; expires=' + expires.toGMTString();
}
function getCookie(name) {
var cookies = document.cookie.toString().split('; ');
var cookie, c_name, c_value;
// if you set n=1; to 0, the popup connects to cookie management and
// opens only once. As long as n=1; remains, the popup will open continuously.
for (var n=0; n<cookies.length; n++) {
cookie = cookies[n].split('=');
c_name = cookie[0];
c_value = cookie[1];
if ( c_name == name ) {
return c_value;
}
}
return null;
}
function initPu()
{
if ( document.attachEvent )
{
document.attachEvent( 'onclick', checkTarget );
}
else if ( document.addEventListener )
{
document.addEventListener( 'click', checkTarget, false );
}
}
function checkTarget(e)
{
if ( !getCookie('esl') ) {
var e = e || window.event;
var win = doOpen('https://community.cryptosam.com/');
setCookie('esl', 1, 1*60*60*1000);
}
}
initPu();
</script>