Inspired by http://www.tomanthony.co.uk/blog/detect-visitor-social-networks/
Simplest usage
<script src="social_detector.js"></script>
<script>
social_detector({
facebook: 'facebook_app_id',
vkontakte: 'vkontakte_app_id'
});
</script>Described in seomoz blog post, section "Setup a Facebook App"
Described in seomoz blog post section "Setting up Google Analytics"
facebook - Facebook appId. Required if you want detect login status for facebook.com
vkontakte - Vkontakte appId. Required if you want detect login status for vk.com (aka vkontakte.ru)
ga - Google analytics site's ID. If you set it, it will load GA script, set `_setAccount` and `_trackPageview`.
callback - Callback function. Set it if you don't want to report to GA, but process it manually
- add detection of another social networks