How often do you go to register to a new site, and see Facebook and Twitter as options for signing in? It’s an easy option, saves you time inputting all your details and can also help you find other Facebook and Twitter people in your network on the site.

Handy, but just how many sites do you give permission to? Depending on the site, you can be giving them access to a LOT of your personal information.

Considering the security issues Facebook often faces, this may not be a good thing.

If you’re not sure who you’ve given access too, you might want to visit http://mypermissions.org. Visit the site then click on the icons for your favourite social media sites. As a cautious user, I didn’t expect to see too many sites with permission on my Facebook account. In fact, 50+ can access my details! I suspect many of those are from when I’ve used an application within Facebook. Scary.

I only checked Twitter a couple of weeks ago, so I wasn’t expecting to see many on there. But I was still surprised to see so many new ones. I’ve signed up to quite a few sites in the last few weeks, but I’ll be a lot more careful now.

Overall, I’m shocked by how much personal information I’m giving away. While businesses are unlikely to use it as often, it’s still worth having a spring clean of your accounts.

It is somewhat ironic, though, that you have to sign in to see which sites have your details..