Usage notes [edit]. The feminine noun acta is like other feminine nouns starting with a stressed a sound in that it takes the definite article el (normally reserved for masculine nouns) in the singular when there is no intervening adjective:
Skype is a program that uses internet to make free worldwide calls and video calls between computers, smartphones and mobile devices, to chat and transfer files. It has about 280 million active users per month and since 2011 belongs to Microsoft Corporation.
Skype is only free if you make your call over the internet. If you make a call to a phone number (which you can do, and is cheaper than using a cell phone or landline), it costs money, and you need to buy credits for your Skype account before you can use it.