Equine Artists

Most little girls go through a phase of passionately loving all things horse. Some never outgrow it. If you cannot get enough of looking at the equine form, then feast your eyes on the images in this group.There are over 800 pictures in the gallery. Some of the art featured include works of line drawings, sculpture, ceramics, watercolors, sterling silver pendants, oils, pastels, graphite pencil, colored pencil, chalk on black card and even horse hair bracelets. Topics on the discussion board include 'Introductions', 'THE USE OF PHOTOGRAPHS IN CREATING ART', 'favourite artist' and 'Tips from artists to artists'. If you are an artist yourself, and include horses in your subject matter, this is a great place to showcase your work.

What's great about this group: It's a must for horse lovers.

Update (22 April 2024)

Most likely, it would be this group. The group was founded in 2007, has 4.3k members and is now private. Go here to request access.

Dreams

Why do we dream? What is the meaning of dreams? If you are interested in exploring the above questions, you might want to look at today's featured group. It is not the only Facebook group by this name, and it is not even the largest, but it does feature the liveliest selection of content. Threads on the discussion board include 'Dream Travel', 'Lucid Dreaming', 'Only remembering fragments of dreams?', 'A little interpretation wanted' and 'Here's an odd one...' More dreams shared and discussed can be found in wall posts. There are not many images in the gallery, but
they include a wide variety ranging from line drawings to surrealistic art.

What's great about this group: explore the mystery of dreams.

Update (22 April 2024)

There are numerous groups themed around dreams and dream interpretation. It is difficult to tell whether any of them was this one. 

Synchronicity

Occasionally life has this way of totally startling you with unexpected and unexplained coincidences. Do these happen for a reason or are they merely the occasional fingerprints of a cosmic joker? If you want to share experiences or theories, this is a great group to visit. On the discussion board, you will find threads such as 'Share your Synchro Stories', 'Synchronicity and Evolution', 'Synchronicity... a defintion: competition 10.20.08 to 1.1.09', 'Jungian Dream Theory', 'Celestine Vision movie?' and 'The holographic universe'. The gallery also contains some interesting images.

What's great about this group: Share the mysterious coincidences of your life.

Update (22 April 2024)

There is more than one group named Synchronicity. Not sure if this is the one, but it seems cool and on topic.

Pet Photo Contest

Think your pet is the cutest? Especially all dressed up in tinsel or posing in costume by the Halloween pumpkin? Well, here's where you can showcase your pets and put their irresistible charm to the test. Every month a different theme is chosen and you may submit one photograph that best captures how you (and your pet) interpret that theme. For ideas, browse around in the gallery to see other pet photos. Check out the information section to find out what's the current theme.

What's great about this group: Show off your pets.

Update - the group seems to be mostly inactive, but it is still public and there is a link here. - 11 April 2024

Twitter

Everybody is trying desperately to get seen and heard in the social media jungle. Who likes your latest wall post or status line? Who follows your blog? For some, it's only about popularity, but for anyone trying to promote a product, a service or merely themselves, visibility is crucial. And that is the main, and perhaps only, point to this group. An open, free-for-all solicitation for followers on Twitter. On the discussion board, you will find threads such as 'TWITTER CONTEST', 'Ten steps to becoming a Twitter power user with Hootsuite #1', 'Fully Custom Twitter Backgrounds!', 'Celebrities on Twitter' and 'Customize Your Twitter', but most topics are merely different phrasings of 'FOLLOW ME I FOLLOW YOU'. The gallery features a variety of images, most of them visual appeals for followers. So, if you are trying to up your follower-count on twitter, the group has 22,000 members to appeal to.

What's great about this group: It's a good place to shop around for followers on twitter.

Update (11 April 2024). It could possibly be this Facebook Group, which is still active and has 53.3k, members at the time of writing. It is still a public group. 

Bonsai

They are the result of man's manipulation and mastery of nature, and yet they are also very, very fascinating - these tiny dwarfs that share the appearance, but not quite the size of some of Earth's true giants. If you want to know more about cultivating bonsai trees, then this Facebook group is a good place to explore. On the discussion board, you will find threads such as 'When to buy bonsais?', 'Tips for people starting to do bonsai, need your help', 'What bonsai style do you prefer?', 'Emergency Repotting', 'How can you tell how old your bonsai is?', 'ANY YOUNG BONSAI ENTHUSIASTS???', 'Making A Bonsai Tree In 5 Simple Steps?' and many more. There are over 1,500 images of bonsai trees in the gallery.

What's great about this group: It's a great resource for bonsai enthusiasts.

Update (22 April 2024)

There are at least half a dozen groups called Bonsai, and many more around the topic of Bonsai. 

Nasa

If outer space interests you, then this Facebook group, dedicated to Nasa and its concerns should provide you with plenty to explore. The group's information section proudly proclaims that one of their admins is a Nasa employee. On the discussion board, you will find threads dealing with subjects such as 'Can we live on other Planets???', 'WILL THE US EVER WALK ON THE MOON AGAIN?', 'Mars - A Second Earth?', 'UFO and Alien sightings', 'A new approach towards humans in space', 'Alpha centauri , is are there any planets ?' and many more. There are 70 links to Nasa related videos, more than 200 links to other resources and over 600 images of stars, planets, galaxies, nebula and many more in the gallery.

What's great about this group: It's a must for anyone with an interest in astronomy.

Update (22 April 2024)

There are numerous groups dedicated to NASA.