Randy Devost's dashboard

If I want to see if any of my friends are on Blinklist do I really have to manually enter each person's name or send huge invite? It would be really nice if I could take advantage of the network I already have in my address books and social networking accounts. Seriously, I've got around 300 - 500 people I'm connected to. I'm not just going to hand enter all their info to build my blinklist network.