Tacky, but not irredeemably.

It's the Post-It Note's 25th anniversary year. Here's the story of its invention [The Rake]. Incidentally, using them to mark pages in choral scores isn't just one of their many uses — it was the first:

And then one day, in the North Presbyterian Church in North St. Paul, inspiration struck. Fry was a member of his congregation's choir; before each service, he placed tiny slips of paper into his hymnal to mark the songs the choir planned to sing that day. While Minnesota Presbyterians aren't especially known for their emphatic performance style, Fry still had trouble keeping the bookmarks in place. Every time he stood up to sing, the slips fluttered from his hymnal. Suddenly, though, it hit him: If he applied some of Silver's adhesive to his tiny slips of paper, his problem would be solved. The bookmarks would stay in place when he needed them to, without permanently bonding to the pages of his hymnal.

Also, whose salt reigns supreme? [Slate]. The winner's available in at least one shop here in Toronto.