I can't believe this is getting downvoted. So let me add to it: The thing about @pmarca was that his tastes were eclectic and many of his thoughts were original

I can't believe this is getting downvoted. So let me add to it: The thing about @pmarca was that his tastes were eclectic and many of his thoughts were original, so whether he was tweetstorming his opinions to be met with furor, or retweeting other accounts, you had a high density of tweets you'd want to read. There are a lot of spambots and content marketers on Twitter, and he wasn't one of them. So it's a loss to the ecosystem. On the other hand, he got into trouble on Twitter, and as a famous person, he was probably accosted and harrassed by pseudonymous morons, which is a much wider problem Twitter has to address. I personally think that if Twitter tires you out, you're not doing it right: turn off the notifications, allow yourself to interact for 30min out of every 24h and you're golden.