Thanks, Nilesh, for the suggestion. Generally, we have tried to make the site graphic and user interface elements as non-intrusive as possible, so that it does not annoy or irritate our bloggers and members.
But, in line with your suggestion, we can have a user opt-in checkbox in the "Settings" box, where a user explicitly says that he/she wants a more visible/explicit alert like a popup/sound and so forth. We shall work on this feature, and update everyone when it is ready.
Thanks again.