invitation

Here's a mass-invite to you all of you (the readers) into ENCA.fi

http://www.enca.fi/sign/tane-li

ENCA.fi is a "vertical community" for coin collectors (euro coins now, special coins later on). It's a place where you can manage your collection, swap coins, and sell them online. The service is in invite-only-beta at this point, so you need an invite from existing member to join - or then you will need an "en masse" invitation like this one.

ENCA also targets casual coin collectors: if you input the coins you have in your pocket into it, it can tell you how rare they are and did you happen to be lucky and get one or two coins that are actually worth a lot more than their face value. Some rare 20 cent coins can be worth tens of euros.

Since it's a beta: feel free to poke around and give any feedback you might think of. The business plan is to target other collector communities after starting out with coins like this. The total market is worth billions (the coins alone are about 2 billion) and companies like Ebay make a "buck or two" from collector item sales every day.

Arctic Startup recently blogged about ENCA here:

http://www.arcticstartup.com/a-platform-for-niche-markets/