I joined Tapastic around 8 months ago and currently have 405 subscribers to West-- a long form fantasy full of action and drama, as well as eventual romances, (straight, gay, etc). I've been told it's most similar to Avatar The Last Air Bender, Studio Ghibli films, and Mad Max, but I only know Studio Ghibli so I have no idea how accurate this is.
I suppose uptake of subscribers has been relatively laggy compared to some other comics but I wasn't really paying attention until other creators began questioning why I had so few. West doesn't have any of Tapastic's favourite subjects in it-- BL, for one, a clear romance from the beginning, for another, or masses of comedy, quirkyness, etc-- but I know there's way more to it than that.
Scheduling has been a huge problem for me. On a personal level this year has been hell (moved house, new job, deaths, marriages, births, break-ups, the lot!) and the schedule went from weekly to monthly over night. I probably lost more than a few readers over that.
Now I update a bundle of 4/5 pages as frequently as I can and provide behind the scenes sketches and character information whenever I want a break-- not to placate anyone, just because I like it. Obviously when I update the numbers shoot up a little, but it's never by huge amounts and I'm still not very good as keeping track.
I had about 240 subscribers scattered across the internet before I got here but as far as I know none of them have migrated. I very rarely acquire new readers elsewhere. But, again, I'm really not into monitoring these things.