What are some of the best blogging sites?

I am looking for a great blogging website, but there are just too many! I am actually looking for a website that's free and there can be many bloggers on one site. For example, I created a blog and people who I choose (friends and family) can easily start blogging on the site. If I could easily update it from my iPod touch that would be nice. And if I could personalize easily. (Have my own logo and background) Note this is not mandatory! Thank You's

Read more ...