IMHO, one of the things hindering growth was instability.
Khal said it all, a good product sells itself and even though the core base of InLeo is very understanding of the "pains" of growth, the same doesn't apply to newer or more casual users.
The product is a lot more stable now so I believe we are back in the right course. I hope the team keeps focusing on bringing new features without compromising stability an uptime