Hi SilentMagenta. Flirting can be nice and might raise a smile. As you realise it can also be dangerous. Might I draw your attention to your photograph, is it meant to be bubbly and flirtatious? I think it is invitational and more than bubbly. Some guys really will see it as an invitation to approach you. Please think of the consequences of this.
I hate to be an old guy giving advice but you really have to look after yourself. So be friendly and bubbly and enjoy your life, but just take care.