If this question is totally off/misplaced, please let me know so I can close it.
The question is, when you finish building a web application (like twitter, vimeo, stackoverflow, 43things... more apps than websites), how do you spread it virally across the web? What means are existent for a tight budgeted young entrepreneur who wants his app of labor to become a hit?
Which techniques have you found most preeminent? target-user related ads? forums? blogs? ceaseless marketing?
This is a crucial phase for any application, you need to establish a status, get indexed highly (which is a different topic but still), get viral and avoid being copied (which I guess is the most important part).
How do you avoid getting lost between the countless web apps today?
All answers appreciated!