I hope they don't riddle their site with crappy ads and upsells like all their competitors. A lot of people spend money on language learning, so if you make a good premium product, they will buy.
I didn't know about sharedtalk.com. Looks like it's made by Rosetta Stone. The sign up form is like a mortgage application. Why does a language learning site need to know my gender, birthdate and address?
I didn't realise Bussu showed ads since I use Adblock but I agree that the ad they are showing you would be annoying.