I hope everyone did well on the SAT's. When I was in school, more of an emphasis was put on the ACT's locally though, and I think the overall trend nationally has been for college's to put more weight on the ACT than the SAT as well because of the problems the SAT had a year or so ago with the scoring mix-ups and also because of the b.s. new 2400 point test the SAT gives. I did, however, take the SAT II's in high school - Chemistry, Math IIC, and Literature. Just don't take these tests lightly, because while they may seem like an inconvenience to you now as high school students, one good test score can erase four years of slacking off in school (as was the case for me), or it could work the other way around and take away any validity from the GPA you've worked for.
My opinion, and this is just based on my own experience, is that most 'bloggers' or 'posters' at online communities such as JBB would do much better on the ACT, because their English and Reading sections tend to focus more on grammar and reading comprehension as opposed to the SAT's focus on vocabulary (synonyms, antonyms, and other analogies). Don't take my word for it though, because I've always been one of those really obsessive posters who tries to always type with proper grammar and what not, but if you're like me and have a tendancy to do that, you'll rip the ACT English sections apart.