http://iteachblogging.com/will-you-clean-out-your-wordpress-theme-closet/
I don’t know about you but I have a closet full of clothes that I don’t actually wear. You know how it goes, you go shopping for a few new outfits, but you don’t clean out the old. I mean come on, we could possibly want to wear that some day... right?

It is common to do the same thing with our WordPress sites. When we first start building our websites or blogs, we try on new themes. We may activate a theme, try it on for a while then decide that we don’t like it. Before long our WordPress blog has 4 or 5 themes just sitting around waiting to be hacked.

Yeah, I said "hacked" because sadly that happens from time to time.

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