Correct. :)
It surprised us as well. We were expecting to have quite a spike in the traffic, since 100k users is a lot.
And it is also the reason why Twitter went so big with the IPO in the first place.
What happened instead is this:
http://o7.no/1dgSQg7 (only 29 clicks from Twitter directly)
http://o7.no/1dgTkCR (I will attribute this growth to Twitter for the sake of helping them look better, although it isn't - we've been approaching different user acquisition hacks)
But now I'm actually wondering how many of these Twitter accounts are real. I'd guess 5% tops, or lower. Is it actually worth advertising with Twitter at all?