When searching the internet for inspiration for logos, elements of web design or illustration, Google would always take me to Dribbble.
So I thought Id try my luck at signing up. However when you sign up, you cant upload your own work straight away, Dribbble has to accept you (after filling in your profile information with a link to your portfolio), or you have to be invited by an existing member. I applied to upload my own work and later that day I was accepted and now I can say that I am a full Dribbble member.
See my first Dribbble debut post, where all the nice members welcome you in the comments.