Seo questions regarding All in one

Here’s my blog. http://www.themaliburealestateblog.com
I write a blog about real estate in Malibu. Every new post I put on my blog deals with that subject. I fill out the tag box with a string like this…..Malibu, blog, real estate, homes for sale. etc.
Now I’ve got dozens of the word “malibu” all over the tag portion of the ” all in one ” thing I downloaded. Is this going to hurt me or be alright for SEO rankings. Any other tricks to learn for better placement? I did the permalinks thing.