Is it alright to flirt with guys?

Would you suggest flirting in a decent way is something that can be performed without any complications?
Is it through flirting that we can identify the one that its our choice ?
What kind of guys are better as possible dates? those who are receptive of flirt attempts made by gals , those who can’t stand them, or those who are the initiators of the flirtatious talks?
Please say something!