I have tried many social services over the years. I continue the ones that I get value from. Here are the ones that didn't make the cut.

• BrightKite

  I should have known better than to think I would be interested in a check-in service. I am not the type of person who desperately wants to meet people who I have nothing more in common with than current location. I also get overwhelmed with the pressure of meeting up with people when I travel.

• CH.MP

  This is one of those identity parking services that seems perfect for someone who cannot host a simple website about themselves. I, obviously, can.

• Dandy.ID

  Identity parking site. No real value there other than keeping other Seth Gottliebs off of it.

• Delicious

  Ah, Delicious. I loved that service so much until Yahoo leaked its disinterest in it. My links are too valuable to me to be subject to the whims of a flailing company. I am on Pinboard now. I hope they stay small and sustainable

• Facebook

  I went through ups and downs with Facebook. I have lots of friends and family there. Trouble is, Facebook the company creeps me out so I don't spend much time on the site any longer.

• FriendFeed

  I loved the idea and the service. I got really into the community. But the Facebook acquisition seemed to suck all the life out of it.

• Hashable

  At first, I thought the Hashable concept was a really interesting way to keep track of connections. Then I realized that I don't need a new way to keep track of connections and certainly not one that is as tedious as Hashable. A regular, old address book works just fine.

• Identi.ca

  I know Twitter and, Identi.ca, you are no Twitter. The good thing about Twitter is not that you can post 140 characters; it's that Twitter is the place where everyone else posts their 140 characters. Identi.ca's only hope is a total Twitter meltdown. But if that happened, Google+ would probably pick up the slack.

• Meetup.com

  Meetup is an awesome site and if you read Here Comes Everybody: The Power of Organizing Without Organizations, you only appreciate it more. That said, I don't have time to get to Meetups.

• Quora

  Quora was interesting when it was new. It felt a little groundbreaking. Like it was going to change how we used the web. The early discussions were great thanks to a smart and energetic early adopter community. At the time I was very interested in the startup scene and there were a lot of entrepreneurs talking about company successes and failures. Then I started to realize that Quora wasn't really different from any other Q&A site. I think Stack Overflow (and derived sites) is the real category killer here. The litmus test for me is that Stack Overflow content up comes up on the terms that I search for, which are mainly technical. I don't know if I would ever get into the habit of idly lurking on Quora to listen in on conversations.

• Tumblr

  If you are looking at traffic and adoption, Tumblr is hugely successful. It is amazing how media companies are using the platform. I like the application and made a few posts with the intention of making it my personal blog. But the truth is, I just don't have much left over to say after my blog, Twitter, and Google Plus