I say go for it. But then I always relied primarily on comms for fic finding. I'm gradually getting in the habit of going to AO3, but I'd rather have the fic come to me, frankly. Also I like the feeling when you do have a tight-knit comm with a bunch of fic writers and you all comment on each other's stuff. That's probably a lost age, but one can hope.

You might also get some readers you otherwise wouldn't. There are people who want to patronize people who post on DW and will cast their nets a bit wider than they would other places to encourage activity--when you're not dealing with a deluge of content, you can explore a bit more.