Addme is my social platform 'business card', it's awesome.
Most of us use social media in our daily lives, we all have mutliple profiles and share urls almost daily. Sadly the majority of social media sites only offer one url per profile. Using linkkle you can add upto 10 links and replace your social media profile url to your linkkle profile and have all your important links in one place.
Loco allows you to take a selfie with someone, write some notes and exchange contact information with them so you remember who you met.
This was born out of my frustration and embarrassment forgetting peoples name right after I would meet them at conferences and events.