For fun I took a look which pool confirmed the about 7000 blocks which contain about 14000 Mastercoin transactions and it turns out Eligius confirmed only 6 blocks of them which is far less than the expected value given the portion of total network contribution.
So I was wondering.. are you actively blocking Mastercoin transactions?

Yes, the spam filters are capable of picking up most Mastercoin spam.
Please don't play games to force us to upgrade it.
Hopefully more pools will gradually improve their spam filters too.
What you call 'games' we call 'resistance to censorship, and is definitely on our roadmap.
https://github.com/mastercoin-MSC/spec/issues/248Thankfully, this kind of spam is futile to try to force on people, so in the end, all you're doing it making it more work to filter - it's still an inevitable reality that it will be filtered.
Maybe you should rethink your life and stop trying to force others to do things that harms themselves.
P.S. There is no censorship going on. Maybe you should invest in a dictionary.