i usually do it like this:
- choose a keyphrase (1 minute)
- set up a twitter acct (1 minute)
- set up a blog on my wpmu (1 minute)
- activate my autoposting system, which posts to my blog which then posts to twitter (1 minute)
- wait 24hrs
- get 100 uniques per day per acct.
rinse and repeat for other keyphrases.. additionally i social bookmark or dump my twitter pages.
That's about it, had some great success in mainstream and now seeing good results in adult as well.. perhaps i'll post some stats in the future.