Not to be obnoxious but I wasn't wasn't very impressed by this post ... use explain plans to add indexes to your tables? use passenger instead of mongrel instan

Not to be obnoxious but I wasn't wasn't very impressed by this post ... use explain plans to add indexes to your tables? use passenger instead of mongrel instances? don't use rand() because it does a table scan? these are things a developer should know and be doing already. There are also mistakes in there like saying you cannot add indexes to your tables using rails (can do this using migrations).