The advent of digital television has brought new stations to our dial but as the latest ratings show, there is still only 24 hours in a day and only so much time to watch television in:

While the launch of digital channels on major networks Channel 7 (7Two), Channel 9 (Go!), Channel 10 (OneHD) and public broadcaster ABC TV (ABC2 and ABC3), as well as SBS Two, has added variety to the TV viewing landscape it has also increased the number of shows watched by no viewers.

In the same week last year there were as little as three programs daily recording a zero reading, which included Planet Rock Profiles on ABC2 on January 4.

Now the tally of unwatched programs is as many as 24 programs a day.

Well that's not strictly true, any program with less than 1000 viewers is rated has having no views. Also keep in mind that ratings are extrapolated from a limited sample. So if there no Spanish speaking newshounds with the black box recorders in the sample, than it is going to be very likely that the SBS news shows will not rate.

The good news is if you're looking for niche television advertising for your product or service, than these new digital channels might be worth a look.

Just like the early days of payTV where the only commercial breaks were for self-promotion, these new digital channels also have a lot of filler that the networks would be keen to turn into revenue of some kind.

The important thing to remember is know your audience and their interests.