I still block and report Twitter spammers manually, which is a pain, and if you don't then you're a poor citizen who is not helping to curate this community. Over the weekend, I cracked the 1000 "barrier" several times, but scum removal meant that I also kept going backwards. Actually, I don't mind people marketing themselves or products in Twitter, just don't get in my way or expect to ride on my back.
And do I care? Yes. Not for narcissistic reasons, but having a thousand pairs of eyes fact checking, commenting on and improving what I write, and being available to answer my question is powerful - much more than I ever imagined it could be when I first started using Twitter. If you made the cut, I thank each and every one of you.