To sign or not to sign...

I've never signed my paintings on the front. I sign on the back because I feel a signature is ultimately a bit of an alien thing to stick onto your painting and jars a bit. If I had a cool name that leant itself to sort of a designerly stamp-like signature, I might reconsider, but my name's a bit unwieldy, long and strange to really look good on the front of a painting. But then, I've never exhibited before really. I'm just about to enter a couple of my paintings into a local exhibition and I wonder if I ought to be signing on the front, for 'brand recognition' if for no other reason. What are your views on this? Do you sign on the front or on the back? What are your reasons for either? What's your signature like? Is it made to look like part of the painting, or designerly in some way, or is it just your name, spelled out plainly? Pros/cons for either way of doing it? My actual signature is also illegible... I take it if I were to sign my work I would need to adopt a different kind, more legible?