The comments system has been abused very badly by spammers trying to sell all their usual wares, hopefully some new software running on the server now will help to reduce this problem to a tolerable level again.
I don't know how many people are using the Mongoose Blogs.net software, but if I find this solution works well I may make it available.
If you post a legitimate comment that gets culled by an over keen spam killer then email me andrew@farina1.com and I will see why it got deleted and re-instate it for you.
One bug I noticed and forgot to mention earlier, was that the comments count will be inaccurate. I'll introduce a further fix for this over the next week.