When optimizing your content you probably know to employ all of the techniques pertaining to keyword density and the like in order to attract the search engines, but what you may not know is that there is another tactic that you can use as Google bait. Including images in your posts will cause the Google Image Search spider to crawl and index your site. If you plan to employ this technique, then be sure to name your images with keywords relevant to the post in which they will be appearing. Also, make sure to include relevant keywords within the ALT tag.
If you can get an image indexed that proves to be popular, then you can draw a serious number of visitors to your site. Some would argue that traffic from Google Image Search isn't valuable in terms of building a loyal readership, but they aren't considering one very important fact. If a visitor is going to be interested in your content, then it doesn't matter what means they used to locate your blog just so long as they discovered it.