The spam being posted on the site lately is getting really annoying. Although I used to hate the following suggestion, it might just work: require that each new member provide a "real" email address, no free account addresses (hotmail, yahoo, etc.). They do this over on "that other digital photo web site" and spam is not an issue there. This is not all that intrusive and makes repeat spammers almost impossible to create.
What do y'all think?