If Sweden's political process is anything like America's, then he's trying to use Second Life to win the support of younger voters. He'll especially win them over if he plays all the time. And regarding your other comment, he's not going to try to use any internet popularity to create internet restrictions/taxes. That would prove disastrous, considering virtual protesters can do more damage to the embassy than real protesters.
Sweden's not the only country getting in on this. Somewhere in the game is a Capital Hill, with Nancy Pelosi planning to appear to answer questions soon. (http://www.msnbc.msn.com/id/16721097/site/newsweek/)
This "gamer" demographic is a huge untapped resource in politics, one that John Kerry failed to win over in 2004. Look at it this way: if you were a Second Life player, and you knew a presidential candidate played the game too, wouldn't you want to vote for him? There's already a level of connection there because he/she plays the same game that you do.
Gecko, don't feel so bad. This is really more of a PPR thread than anything. If someone here made a "OMG FFVII DS REMAKE!!1" thread in PPR, the reaction would be the same.