It costs at least 5430 satoshis to create an output at the moment.

Is the same spam limit applied if the script is OP_RETURN?

If not, I would be concerned od opening a cheap spam.

Tamas Blummer

On Mon, Feb 24, 2014 at 11:39 AM, Wladimir <laanwj@gmail.com> wrote:

And if this is not abused, these kind of transactions become popular, and
more space is really needed, the limit can always be increased in a future
version.

Wladimir