we co-sleep with ds (9 months) and it's worked well for us up till now. he's started to crawl, and has realised that he can crawl out of his bed onto ours and over our heads, pulling our hair, eating the wires ...well i'm sure you get the picture!
it's been a half 5 wake up for the past week or so, but last night he was awake from half 2 to half 4 just bouncing around, not unhappy or crying, just awake. consequently today he's so tired he doesn't know what to do with himself, and won't nap, nurse, be cuddled or comforted.
the first person to say it's a phase will get electrocuted by their computer.