I have used Gabcast (www.gabcast.com) a couple of times and I see that Google ranks it, which is no surprise as I think Google owns it. It's a nice way to welcome readers to your school blog. Anyway, Gabcast involves you making a recording from your phone and posting a link to the recording on your blog. I use Blogger (www.blogspot.com) which is free. Your blog readers click on the link and the recording you made plays for them. Gabcast is free too. It's kind of fun to do but you wouldn't want to do it too much. It is easy to do and you can pay to get an upgraded version but the basic version is OK. Happy blogging.