If you’ve been playing Smash Bros. Brawl online over the past few days you may have encountered an unacceptable amount of lag. I wouldn’t know, because I live in Europe and thus Nintendo hates me. Gaming news site Kombo contacted Nintendo for an official statement, and they replied; “As with the launch of any online-enabled game, especially one as popular as Super Smash Bros. Brawl, everyone wants to play at once. This puts a strain on the pipeline. We have seen improvements in online play performance every day since launch.”
Paraphrased, as less people try to play at once, performance will increase. Good to be pro-active!