Yourmifi is your best choice to rent a data line while you are in Spain, avoiding the abusive roaming fees the companies charge.
Present 3G technology lets you acces the internet from mobile devices without problem. However, when travelling outside your country, roaming fees chain you and reduce your possibilities.
But now we found the sollution, we rent you mobile routers (aka MiFi's)! They are nice, practical and they give you high speed internet on the go!