I really like to connect with people but if I don't know you and don't know why you want to connect with me then I won't! If you are an artist and you want to connect with me please send me your website address otherwise I won't follow up your invitation.
If you're an artist and you don't have a website then for your own sake set one up asap. I can recommend Weebly. As someone who has to research artists websites on a regular basis my advice would be to have a simple, clear layout plenty of good quality images - put your text (bios, statements etc on a separate page) and have very straightforward navigation.
If you look at my own websites:
www.fiongunn.org, http://www.bigsmallartists.com/www.intimatetransgressions.weebly.com and www.sewinginstreatham.weebly.com you will see the kind of artists I collaborate with and the kinds of projects in which I'm involved. So if you want an 'agent', a gallery or someone to promote your work commercially and if your work falls into the category of commercial then I'm not the person you should want to connect with!
Write something about yourself. No need to be fancy, just an overview.