@helmut_meukelI think the most important title, is the title of the very first story/book/whatever, because that's the one where you have no followers and there is an argument there for getting the proverbial ball rolling.
After that, then there is an argument for all the subsequent titles being superfluous.
Think about your favourite authors, do you actually decide whether or not to read the book based on the title, or do you go, "Oh look! A new book by...!" and grab it regardless?
I have a theory that the weirder the title, the more likely you are to remember whether or not you have read it. This is pertinent to those who write lots, eg, Bernard Cromwell with his twenty-odd Richard Sharpe books. Some may be able to look at a shelf of twenty-four Sharpe books in a shop and remember which ones they have read. Not me.
I used to go by book covers, since they were more memorable to me than titles (which I never pay attention to, because ICRS). Which was fine, until publishers caught onto that and started to republish books with different covers. Nothing more annoying than going "O..., (insert author) has a new book out...!" Buying it, going home to read it and finding out that you have already read/own it.
When I was little, I always wondered why my father had more than one copy of the same books (with different covers) on his many shelves. Now I know.
Equally, covers can put you off a book. I was very late to the Discworld, purely because I thought the Josh Kirby covers were childish and that the contents would be as well.. How bloody wrong was I... Once I had read one, the covers made sense and my attitude changed, and I came to like the JK covers as much as the stories within.
Granted, we are all not the same and my foibles are not someone else's. Which is probably for the best.
Whenever I post a new story, all my other work gets a look in as well. Sometimes it's only a few of them, and sometimes it's all of them, and you know that you have caught the attention of a new reader (fan) and they have consumed everything you have written. Otherwise, the weekly stat just shows a few hits on one or two stories and you know someone has tried it, and found it not to their liking. Or they tried one, were on the fence, tried a couple more, and then decided my style was not for them.
My stance on the matter, is that titles are good for attracting the attention of curious readers out to try something new, and that titles (in porn) can be a good way of telling a bored and curious reader as to what the contents of a story are, before they even get to the 'blurb'. For instance "Daddies slave" tells a reader immediately that it's an incest story with elements of BDSM. If that is what they are looking for, then they can read the blurb and decide whether they want to read it. If that sort of story is of no interest to them, they can skip it easily.
And then there are regional differences. Or 'localisation', which I think is the technical term. Many times, both written and film fiction has different titles and cover art, depending on the country the product is being sold in. HP and the philosophers stone was retitled, 'Sorcerers stone' for American audiences for instance. So when posting titles on an internet site, which by it's nature is international, using complicated titles could actually backfire.