Even though a #prayforboston tweet takes all of 5 seconds for someone to post - reading it makes me know that for at least those 5 seconds, someone cared about Boston - and that makes me happy.
The experience made me think of some other ostensibly shallow internet-only campaigns like the recent gay marriage avatar-changing "slacktivism"
Does the Supreme Court of the USA care about facebook profile images? I'm pretty sure that they don't. Do people who are gay care? I'll bet that they do.
Does the Israeli or Iranian government care about photos their citizens are posting? Maybe not. But do the citizens of those countries care? Yeah, they probably do.
This is so awesome - should we change our profile pictures for everything? Lets not get carried away.