[uf-discuss] make microformat class's invisible

[ion ion]

Hi!

regarding the FAQ

Q. Given that Google now looks at hidden content as potential spam,
will invisible microformats be considered spam?

to make microformat data invisible is bad practice. But in my case
there is no another choice
I already have a page and insert microdata with all it's field will
damage the view
so
how exactly I can mark the class invisible for view but completely OK
for search engine
what's the downside of this practice?

Thanks!