I know of the -30 penalty and that a site can be exluded completely from Google's index, but the -950 penalty that I found today was new to me. It seems like an over optimization penalty. To sum up, here are the penalties known to me:

1. -30
2. -950
3. Index exclusion.

Any other?

-950 penalty Recent External Link: Google's 950 Penalty - Part 13

-950 penalty Brief summary: Google -30 & 950 Penalties - brief summaries

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