The automatic system...
advantage: Runs for itself once it's up
disadvantage: Users might post shit, and God knows when we'll find it out.
However, it might be possible to delete stupid reviews and the ratings connected with them. Let's say a user named "n00b0tr0n!c" posted "I rule" in the review text section and rated the WP 0. If this is stored somewhere, an admin could have the privilege to edit the review so that it reads ' "n00b0tr0n!c" has posted a stupid and useless comment', and the rating gets deleted so that it's no longer calculated.
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The mail submission system...
advantage: Admins would have full control over submitted material and the ability do delete / ignore idiotic postings and / or edit posts to remove stupid greetings or offensive stuff.
disadvantage: There's no telling if we'll have some cute & cuddly 5 mails in 3 days, or if traffic will grow over our heads.
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I'm really not sure what to decide for...
