I'm not on twitter so maybe that's why I never though of it that way. But what I don't get is that you seem to condemn these people who follow you just to be followed back (ahah, I just imagined this situation literally) but by supporting them just because they supported you, you're actually encouraging this kind of behaviour... (I might have misunderstood though... do you sub to your subscribers' comics or just like and comment their stuff ?)
Something else I'd like to say about the quick sub/unsub here on tapastic is that the readers don't have a "read later" option (like filing the comic somewhere to read when you have the time, without actually subscribing). That means some of them will subscribe just because they like your thumbnail and description but WITHOUT having read your comic. And then they might unsubscribe because it wasn't to their taste or because it's been like, a month and they realize they still didn't have the motivation to read it or something.
But they might not be lost forever ! (I've had subscribers that left and came back later !)
Personally, I check all of my subscribers' comics but I don't subscribe if it doesn't meet my criterias. To know if what you're doing is right, always imagine what it would be like if everyone did the same.
In this particular case, if everyone subbed back, the subscription system would loose his meaning, everyone would be at the same number and no one would be happy to get a new subscriber because you wouldn't even know if they're reading your comic (except for the ones that comment).
Like @keii4ii said :
And one last thing before I shut up :
The thing is, here on Tapastic, this is true. I think there is a problem with the way the comics are promoted. The more popular you get, the more visibility you have and the more popular you get etc. In a way, that's normal and fair, and I agree with the "popular" section on the frontpage.
BUT I think we (as readers) are a bit too dependent on that system and there should be an alternative system to browse through stories and find old stuff, very new stuff, completed stuff, stuff that don't update often... I have a bunch of ideas about that (like filter with subcategories, improve and promote the tag system, make it possible for creators to promote a particular comic at the end of theirs - like choosing the comics that are advertised when you get to the bottom - stuff like that.) but I digress !
The fact that it's mostly popularity that will give you visibility encourages people to think of their amount of sub as a mere number that has to increase to put them on the front, rather than individual readers. And I find it very sad.