Here is what social media platforms and search engines know about you
The Facebook scandal involving the harvesting of data from tens of millions of users has raised a lot of questions about social media and search engines.
As Facebook founder and CEO Mark Zuckerberg testifies before the US Congress this week on protecting user data, here is a primer on what they know about you:
Social media
Facebook, which has more than two billion users, has access to everything you do on the site: the photos and videos you post, your comments, your 'likes,' anything you share or consult, the…