I am considering building a web or windows app that will automatically generate the keyword tags (like for Windows Live or technorati) for a given blog entry. My thought is to have you copy and paste your blog text into a textbox of some kind and it will return the proper HTML or formatted string with the relevant keywords that you can copy and paste into your blog entry. I would do Windows Live tags and Technorati tags. I would really like to build it as a add in for Live Writer but have not found an SDK for it. Would you be interested? Do you have suggestions as I begin the process of building this that you would like me to know? I am betting it has been done before but I was not happy with anything I have found so far.