I wasn´t sure about this long title, but I think it gets my point out in a way that I couldn´t do with a shorter title. What I have been thinking about today and many times before, is how do you attract your visitors to subscribe to your newsletter or whatever, using an optin form, without annoy everybody else?
So, I have a choice to have a “fly in ad” that will get your attention, and you might sign up for my newsletter. But I don´t really like that sort of advertisements. It gets in the way of my contents, and then I think my visitors (at least the ones that come back to read my posts) will get a little annoyed if they see the same ad over and over again.
I then have a choice to put a subscription form in the sidebar or below each post or maybe somewhere else. The problem with this is that my visitors will hardly notice the newsletter option, and very few will sign up. If you use the popover script, then everybody will see it.
I guess there´s no easy answer for what to use.