I've seen this referred to as "one of the most downloaded educational podcasts on iTunes" [reference]. A "real-life science writer", Mignon Fogarty, has built up a great resource site of "Quick and Dirty Tips: Clean Up Your Writing". My title link is to this week's tip; scroll down to see others (they're all on one page). The left panel has links to titles and a search box. I like the fact that the podcast also appears in text form.