Nickname,
Just adding to what Bill said...
Lots of people think SE stuff works in a week... Bill was spot on... it takes months... but done correctly will work for ever(within reason
)
I dont laugh at Bill's approach.. because I do the same....
Build clean(ish) sites, that can get listed in DMOZ...
Use nice text.. not just spam keywords
Think about the keywords you are targetting when you build EACH site
Dont mirror entrances - have one and focus on "it" - IMO make it the default index.
Links with Linklists and other relevant sites - but do it wisely... this is not about traffic(sheer numbers) it is about relevance.
Keyword domains are good.. and think outside the square because there are lots of good ones left.
Have a central point(hub).. in fact have a couple...
Natural linking is a good key
Recips are good.
Anchor text near your links helps too
Dont get caught up in the "PR" whore gang
HTH
DD