Converting words to hashtags when posting to Twitter

[Loyal]

I currently use LinqToTwitter to send posts to Twitter. I'd like to convert words in the title of the post to hashtags when it gets fired off as tweet so something like - "Firefox is cool" is the blog post and becomes #Firefox is cool http://myshortu.rl/dhsgeh on Twitter. So far the way i see it is i need a database table with the words i want to convert to hashtags. I'd have to parse out the title and compare the words to those in the db and add on the pound sign. Is the best way to use a db table? Or can I do it with an in memory collection or keep the words in web.config? Thanks....