Robert_Charlton - 8:20 am on Mar 29, 2013 (gmt 0)
I think there's some confusion here, about what the word "indexed" means. Yes, meta tags are "indexed". Otherwise, Google couldn't store and display them.
That said, I agree with the rest of what's been said here. Google does not use them as a direct ranking factor. As noted, their effect on click throughs might have an indirect effect... and no, you don't want to copy them from other sites.