Is there a limit to the Block List?

New thing of me: if you're feeding, flaming, blaming and can't get over it that you're a 0/9 Soraka after 6 minutes because you want to engage and die whenever you're back to lane during any of my games, then I'll offer you a nice warm seat on my block list.

Now I really wonder, if there's actually a limit to the amount of people I may block? I have a strong feeling that a lot of people want a place there reaaaaaaal badly xD