I get how how an individual might feel they can't do much more or better than nothing. I would argue though that if they choose just to tweet and so forth, they're not doing much at all.

I'm still not sure that there really is much of a change with twitter style activism.

I suspect everyone who is inclined to belive a thing already are in their own protected circles (to use a google+ term ) and they're not changing much. The bots are the only crossover I suspect.

Personally when I am on Twitter, I unfollow a lot of the higher activity activist types (even the folks I know), because honestly even when I agree i don't care to see folks yell at each other.

I suspect "there's nothing else I can do" is still a net 0 in the end as far as change goes, well other than the aggravation of a twitter spat.