Hello
I a foreigner who has never been in Switzerland however I have income from a swiss company in the form of payments for internet ads. Basically the swiss company pays me 10-20 cents for each user that clicks on ads and does a specific action(PPC - pay per click)

During 2014 I've earned over 44.000 USD from this company and I have been struggling to find out all the taxes I have to pay.

I already made payments to the taxation service in my home country but I don't know if I'm liable for taxes in Switzerland. I ask because I know U.S. also taxes these kind of income for foreigners.

Since I received no answer to the initial question I will try to simplify the question:
Is there any taxation(at source) when a swiss company pays a foreigner for internet services ? U.S. for example has 30%.

The swiss company only tells me taxes are my responsibility, but I've never been to Switzerland I don't have a clue about what I should do.

You don't owe taxes in Switzerland.