Google's manual review.

Google probably has a section in its algorhythm which flags websites for a manual review. I know that manual reviews happen for a fact, but they must have some triggers.  For instance, if your website is penalised, you will need to ask for a reconsideration, which is basically a manual review.

Its important to keep in the back of your mind that google may/will one day do a manual review on your website, and make sure you have been as honest as possible.  People try and sell links and get caught all the time because of manual reviews.

Bear in mind that if one of your websites has a problem such as selling links or black hat tricks, they may look at your other websites.  We all end up doing grey hat SEO, its best to avoid getting manually reviewed.

Be truthful naming images

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