I was thinking yesterday about this. Surely it wouldn't be hard to make a simple prog that connects to the net and downloads a proxy list, checks them and gets a random sample of 50-60, connects to digg through them, and diggs your article. Of course first time you'd have to create 50-60 accounts, but i'm sure you could automate all that apart from the captcha if you just used a spam address? Would people buy something like this? if so would people pay £50/$80 dollars for it? I'm guessing one of these has already been made? I had a pretty thorough search but nothing like this came up. Cheers!