We're giving away invites to social sites. To start our invites blowout: Wallop, the Microsoft spin-off social network that's still invite only.
If you'd like access, post your email address in the comments of this post. Or if you want to protect your email address from spammers, grab a temporary email address from Spambox.us, post it here and then add your real email address once you get into your Wallop account.
We'll send invites to the first 5 people on the comments thread below: those people must invite at least 5 more people and so on. Every time you invite someone, leave a reply to their comment with a phrase like "invite sent to brian" (you may need to use a different phrase each time to avoid the duplicate comment filter). Those who get invites but don't send them out will get slapped with a wet fish.