Nowadays almost everyone has a computer and access to the Internet. 'I mean developed countries of course' (wg mnie, to moze byc polaczone z pierwszym zdaniem...everyone in the developed..). 'Owing' (to jest zle slowo) wide access to the internet, social networking sites 'has' (nie rob takich bledow, jak mowimy o l. mn to have) become popular.
I think that 'this portal' (ja bym tutaj napisala, ze to jest 'usage of...') has good and bad sides.
Firstly I will describe 'a' (i po co to 'a' przed l. mn?) favorable sides. Facebook helps 'connecting' (t jest zle, tutaj TO CONNECT) people.
It is just for everyone who has 'appropriate conditions' (nie za bardzo jasne co to sa?) to create an account and use it. There are many competitions, so 'you can' (nie uzywaj 'you, tutaj lepiej...there is a possibility of winning) 'win' (niepotr) something, often with 'slight application of force' (tego nie rozumiem).
Facebook 'has also' (zla kol slow) bad sides. Many people 'has' HAVE (people tutaj l. mn) fallen into depression because of Facebook 'because' (uzyj inne slowo, bo 2 slowa wczesniej miales to 'because' - tutaj mozna AS) people compare themselves with others and when they realize that they are worse at something 'than others' (niepotr) they may be sad and in some cases fall into depression.
(dodaj tutaj na poczatku, In effect, you) 'lost' (zly czas) 'yours' YOUR privacy because of that.
Another bad fact is that Facebook collects 'an' (niepotr) 'informations' (to jest niepol) about users. Every private message is saved in huge databaseS and authorized people can read it.
In my opinion (brak przedimka, tutaj 'a') better idea is 'to not' (zla kol slow, not to) have (brak przedimka) Facebook (account)..