Lit Soup is a fantastic blog run by literary agent Jenny Rappaport. She's offering new writers a chance to give back to the writing community and promote their own work by writing 500 word pieces on aspects of craft as it relates to novels/works in progress. I think this is a brilliant idea--and an incredibly generous one.
Go check out Jenny's fabulous site for more details.
John Scalzi is also opening up his blog for guest authors to talk about craft.
I plan to do both of these things myself, if they will have me, when it gets closer to my pub date.