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This week was pile-on-Twitter week, thanks in large part to an 8,500-word blog post by early investor Chris Sacca, which explained what Twitter was doing wrong and how to fix it.Sacca had a lot of individual points that made sense. Twitter is too hard for new users to figure out. It's a little intimidating. It can feel isolating if you don't know who to follow and nobody's interacting with you.In particular, Google. Search advertising is great because it lets advertisers deliver messages to exactly the right people at exactly the right time - just as they're looking to buy something online.
