Ping-o-matic only or your own custom ping list?

A custom list is always better, since the only advantage of pingomatic is that pinging takes less time.

There are quite a few disadvantages:
- If they ban you your pinging will be completely useless
- Due to the number of pings they get, some are simply ignored/lost/not working for other reasons, even if they report a successful ping
- You are missing out some services really worth pinging
- You are limited in the ammount of pings to pages on the same URL you can send from one IP in a given time period, especially bad when using desktop based pingers for mass pinging (e.g. to get huge sites indexed faster)

Thanks StarkReality