countless people have posted here that they attend church but don't believe. Some attend for cultural reasons, most attend to mollify a family member.
They used to say, If you realized how many of your friends and acquaintances were gay it would change your perception of gay people. Well, coming out of the closet, was a major strategy of the gay community and they were right--it lead to more acceptance of gays by society as whole. Even Mormonism has changed the way it treats gay people.
What if everyone who attends church made it known that they don't believe the claims of the Church. It wouldn't have to be in a confrontational way or in a "recruiting" way. Just let it be known that you, personally, don't believe any of it.
Would they have to start treating us disbelievers with less scorn? Would they start to accept that maybe, just maybe, Mormon testimonies aren't for everyone? If one or two were to "come out of the closet" it would make it easier for other to do so. It would also make it easier for young "developing" Mormons to realize that their doubts are not just something wrong with them, but maybe, just maybe, valid.
When I first came to these boards, the experiences exmos have telling their friends and families are a lot like gays coming out. You have to keep doing it with every person who knew you as Mormon or learn you were Mormon.
It gets easier all the time, but sometimes can be uncomfortable.