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That is an interesting idea. I like it because it stops people from just going by someone's blog and clicking down the line without reading.

And self votes.

I can almost guarantee myself a substantial return on my investment by simply upvoting myself 10 times a day. Each time I vote for someone else's post I am essentially reducing my return.

Of course I don't see it that way because votes also come from others, but you can bet that some do, especially those more substantially invested