I've been hesitant about checking GlobalComix 'cause when I briefly looked at it I got the impression it was for, like, very professional comics with the main intention to be sold (and being sold usually requires an interest beforehand). But from your review it sounds more like the platforms I'm already posting on, so hey, perhaps I should eventually add one more!
I suck at self-marketing, so posting my story in as many places as I can so far seems the only strategy I can pull... ^^" (Not fishing for pity or whatever, just know what my weakness is. Tragically it seems to be an almost fatal one in the webcomic world - but I'll keep moving >
)