[liquidsnake]

Well I guess it matters how important it is for you to get all the users interested in your service or a part of them. Right now there are two categories which you are definitely missing on: 1) People who don't have a Facebook account. 2) People who have one but are more privacy-concerned. How affected you are by these two categories is defined of course by the target audience (demographics and social status for example), but it is pretty hard to draw conclusions without alternate methods of registration (for I know those 500 registrations came from 1000 interested users).

[deepkut]

Well, we're convinced that 99.9999% of Greeks have Facebooks. But all I'm trying to say here is that FB Connect might be extremely effective for certain markets, and horrible for others.

[sofifonfek]

You're only looking at one side of the coin. If you look at it from a FB stand point, FB connect is effective whatever the market.

See you can make money in a casino, some games offer better chances than other but in the end it's always the casino who makes the real money.

[deepkut]

You may have misinterpreted what I said because I don't quite get what your point. FB connect is not effective for certain markets. Good luck getting cryptologists signing up for your FB Connect website.