Got it - is it growing? How quickly?
We had 38 signups yesterday, grew ~44% in the last 30 days.
EDIT, mathfail: grew 79% in the last 30 days.
The big spike in the beginning was before we implemented fraud checks (eg, users directing botnets at the shortlinks).
Since then, the transaction volume has been growing at a similar rate, at 70% growth in the past 30 days (compared to 79% user growth).