This would be good for the website. if you really like someone's projects, you could get a 'news feed' on when they have added to a gallery or made a new project. This is what i originally thought 'taggers' were.
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When you add someone as a friend, their most recent projects automatically show up on the front page - it's like following on Twitter. You get to 'follow' their uploads.
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Aside from what The_Dancing_Donut said, you can also follow Scratchers by using the RSS feed (that's the orange box on the right hand side of a user's page; click on it and it gives you a page that updates whenever someone uploads a project, you just have to bookmark the page in order to continue receiving updates).
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