Getting from the first line of code to $1000 revenue is the hardest part of ANY business. Think about it. Google. Facebook. Twitter.
TweetMiner did that in 98 days. That's VERY rare for a web startup, especially for a part time project in a space that everyone says is not monetizeable.
Sometimes it's not about the amount of revenue - it's more about what the business proves. After that it's just a question of scaling and not f*ing up...