I have found that quite a few users NEVER click on the flashing envelope that indicates they have a PM (Private Message).

I have seen this time and again where I'll send a PM, and check back a week later to see that they have not read it. Yet they have visited the forum and even posted.

I know I cannot ignore those flashing things on my screen, but apparently there is a significant percentage of the population who do not pay any attention to it.

So.... I am thinking that maybe a new feature or something that would really get users' attention. Perhaps, after ignoring a PM for an hour, or three visits (...or something like that), a bold notice would appear as the first topic in every forum saying:
        YOU HAVE NEW MESSAGES.   --->> CLICK HERE <<---