I haven't joined Google+. If it becomes popular, I suppose I will be sucked in, but it doesn't interest me much.
One reason I haven't been tempted to join Google Plus is that I'm generally suspicious of synergy on digital products.
When I bought an Android phone, Google forced me to integrate it with my Gmail or the phone wouldn't operate. Now I have all my Gmail "contacts" (which Google defines as anyone I sent an email to in the last five years) listed as contacts on my phone, which means any time I want to look up someone's number I have to scroll past an infinite number of names I don't even recognize. Try as I might, I have not found a way to erase these off the directory.
Furthermore, the real name policy creates all kinds of problems. As many others have pointed out, people lead separate lives and the information I reveal to a brother or best friend is not the same as information I want to give to a casual acquaintance. Yes, there are "circles" but I think the real answer would be to let people have separate profiles. I would like to be able to keep my private life separate from my professional life and I think most other people feel the same way. I haven't tested Google Plus yet, but I'm guessing if I used it I would have to integrate it with all the other Google services I have: Gmail, Docs, Blogger, Picasa, Adsense, etc. Maybe I don't want all these connected on a single account? Google's position: too bad. With Yahoo! and Flickr, at least you can be signed on both websites through different accounts. With Google, you can only be signed in at one account at a time across all their platforms.
There a couple of other reasons I'm suspicious of Google +. The prime innovation that was spoken of in the press over the last couple months is these "circles"... These circles were already available on Facebook long ago in the form of lists.
Furthermore, Google has a long history of proposing or buying platforms and then basically abandoning them. Witness: Knol, Orkut, etc. Blogspot hasn't had any noteworthy upgrades since Google bought the company. Fed up with Microsoft Word, I tried Google Docs and found the word processing software to be horrendous; next to no customization possible- it was like using software from 1992. The only Google services I'm particularly impressed by are Google Search (easily the best), Google Maps (ditto) and Adsense (well-designed and easy to customize, though I'm not sure the low prices are good for the publishing industry). YouTube has a lot of great content but I've got mixed feelings about the programming. Curiously enough- given Google's background in search- the search engine on YouTube is terrible, throwing all kinds of random irrelevant results to the top of the heap.
Okay, rant of the day is done. If more people I know become Google+ junkies, I know I'll end up there too. In the meantime, I'm minus at least one digital timewaster.