I have a simple service where you can launch your own blog. The service is based on one domain and users get folders for their new blogs. So it's www.MyService.com/user1 www.MyService.com/user2 etc. I want to introduce automatic pinging and use Pingomatic for this purpose.

There are about 70 users so far and in most cases they update their blogs daily.
Do you think my domain will get banned in Pingomatic for pinging so many blogs within one domain? I know it's impossible to ping Pingoat with 2 blogs within the same domain (at least within a short time period like 5 mins or something like that). How about Pingomatic?

I'm not sure pingomatic does.. but pingoat definitely saids you shouldn't ping so much so often

I use pingomatic and I ping after each update. I have had no problems.