Welcome to the latest iteration of irishblogs.com
The site is running XenForo, which is a modern forum software package.
You can link your Facebook or Twitter account to your profile to save time logging in
If you're already using gravatar you can use you avatar here as well.
Which tools for managing social media do you use?
Personally I'm using Hootsuite as well as a couple of other things to manage multiple accounts on Twitter.
Instagram still doesn't allow 3rd party apps to do much, so I haven't bothered with any of them...