Thank you for your answers.
Imho, it would be very nice if a way to make all seeds compatible between different wallets will be find...

I wonder if a wallet seed could be imported into another HD wallet.

Let me add an example.
I have an Electrum wallet and this service won't be updated anymore in the future. Or simply I wanna move my funds, my labels and addresses into another wallet ( for example GreenAddress ) . In a case like this one, could I add Electrum seed on Greenaddress ( or another HD wallet ) and restore all my funds and addresses?

I think Manchester City will win.

Some free app developers  make money simply selling their apps to a biggest company.

Japan, in my opinion.

Bills 20 Patriots 17

Spain 67 Lithuania 73

Italy 87 vs 94 Lithuania

Roma 0 v 2 Barcelona

Seattle 13 @ 20 St Louis

Manchester United 0 v 1 Liverpool

Germany 5 v 2 Poland

Mexico 78 Uruguay 71

Europe.

Anyway, I think the most of Bitcoin users are Asians, just because Asia is the most populated continent... 

Wisconsin 20 @ 13 Alabama

Valencia 1 Monaco 4

San Antonio 80 Seattle 72

The match ended...

City 3 v Chelsea 0

San Fransisco 13 @ 34 Houston