Google engineer Steve Yegge posted a note on Google+ last night intended to be internal—but winded up external.
His 5,000 word, essay-like rant was bursting at the seams with one strong opinion: Google+ sucks.
The post was taken down from his profile but can be read in full here—and it's worth a read. I could discuss it at length but his own words will paint the clearest picture. In his op-ed of a sort, he called Google+ a "pathetic afterthought" among other things, and praised competitors like Facebook and Amazon.
Steve has since posted a follow-up (also worth a read).