On the My Blog page, click Edit from the context menu of the entry containing the comment you want to delete or click the Comments link inside the entry.
Click the Delete icon beside the comment to delete it.
On the Blog Watch or Blog List page, enter your search criteria in the Search For field, and click Search. You must be following at least one blog in order to search from Blog Watch.
Click the Show Search Options link for more search options:
Search For Enter the word or portion of text to search for.
Search In Select where to search for specified text.