Basically it works as Guild Wars 2 group finder. It will get your groups but you still won't end up ported to instance.
It's simple, yet nice looking menu, where you can browse messages related to each dungeon, raid or battleground.
If we got majority of population to use this, there would be much less spam on world chat.
I have been using his for few days now and I gotta tell you, this addon changed my game experience.
Example of how it improved my game time:
- I needed RFD run
- Tried starting my own party, took me some time and I eventually gave up
- Went afk, some real life shit
- Came back to game, checked vQueue menu for RFD and saw 3 ppl looking for members.
- There is "reply" button next to each message which you click and send pm to group leader for inv
- I got my RFD run

I've missed all RFD messages on world cuz I was afk. But vQueue sorts them nicely and you can check it everytime to see if there is some group started.
You can join chats just for the vQueue to keep track on group messages

It made my chat window cleaner since I got separate chat tab for world and generals now.
My overall experience has improved, i'm grouping much easier, chats are cleaner and easier to follow...
There are many great addons here, I tend to support new authors by using Questie, Shaguquest, LunaUF and few others I can't remember now, but this addon is actually a revolution for this game. It affects and improves most important part of this game - grouping.
It doesn't take out social aspect of the game. It just makes it easier to handle.
If you haven't tried this addon yet, DO IT! Do it NOW! Spread the word, get your guildmates to use it.
I can't think of a single drawback for using this addon. Its just perfect.
Sorry for posting this since addon has it's own thread, but general section is much more visited and author of this addon isn't much active on forum either.
Lets just get this addon used by more people. It's something we all have benefit from.