Doesn't work. Rated 1 out of 5 stars

I thought it worked at first, since I didn't see a "seen at" immediately after installing it and testing it out. Nope, the next time I checked messages, it was back. Time to try something new.

Rated 1 out of 5 stars

Doesn't work

Not working on FF 32.0.2 Rated 1 out of 5 stars

I have Facebook Unseen installed on Google Chrome, but much prefer to use Firefox & have finally taken the time to set up all my apps after updating again. Thought this app would be perfect for ensuring I don't cause friends annoyance or anxiety when reading their messages without time to reply, but I just tested it using FB Messages (Inbox) and Chat with my partner's account & it doesn't seem to work at all ): Downloaded the updated version linked in another review, but still no glory.

Removes the obligation to immediately respond Rated 4 out of 5 stars

Great for viewing a message without the obligation to immediately reply because the sender can see that you just read their message. This add on allows you the time to fact check, or look up status and research info, or senders posts for mood swings, or any other info, you may like to have, to assist you to make an appropriate informed response.
The icon to switch this add-on to on or off, is a little troublesome, and lately, the icon has disappeared from my add-on bar completely, and I cannot seem to find it.

Rated 5 out of 5 stars

small & mighty!!
too bad it doesn't work anymore since the latest update to 28.0 :(

Rated 1 out of 5 stars

Doesn't work. At all.

Rated 5 out of 5 stars

Fantastic addon! It would be great to add "Person is typing..." block also.

Rated 5 out of 5 stars

It works just fine, this is a fantastic addon, and it accomplishes its task pretty well. I have a black skin though, so I hated that white background, and I replaced the icons with better round ones with a transparent background here: Feel free to make use of that. Now, this is exactly how this thing works.

1. It only works on chat, not the messages section.

2. You can turn it on without refreshing and it will start working immediately, but if you turn it off you need to refresh before person B can tell you saw his/her message.

A note to the creator of this addon: I would suggest making it so it refreshes the page if your on a facebook tab and you turn the addon off, so it actually takes effect, and replacing the icons. Other than that, this addon is pure perfection. You can use the addons in the one I modified if you want :)

Doesn't work anymore Rated 4 out of 5 stars

Few last days it doesn't seem to work. Messages are shown read despite that this add-on turned ON. I'm using FF 19.0.2.

This review is for a previous version of the add-on (v1.1.rev124.1-signed.1-signed). 

Rated 4 out of 5 stars

works as expected, thank you

This review is for a previous version of the add-on (v1.1.rev124.1-signed.1-signed). 

Exactly what I was looking for Rated 5 out of 5 stars

With the new feature that enables you to turn the add-on on or off by clicking is making it easier to use. Works like a charm. But so far, as experienced, there is no need for me to turn the add-on on or off to make the messages and chats appear as "read".
Thanks for this.

This review is for a previous version of the add-on (v1.1.rev124.1-signed.1-signed). 

Could use an on/off toolbar button... Rated 5 out of 5 stars

The problem with this extension is that it also blocks the marking of messages as "read". So as long as it's on, messages in the inbox will forever be marked as "unread" which is really annoying. Of course in order to apply the "read" status, you can disable the add-on temporarily, click on the messages, then re-enable it, but that's very time consuming having to go to the add-ons manager every time etc.

A tool bar button for turning it on/off would save a lot of time in that case!

The developer now added an on/off button, making this the first extension of its kind for Firefox to finally offer this feature! I therefor updated my Rating from 4-stars to 5-stars! Very nice, thank you!

My only criticism is that the button *icon* is not very stylish. It has non-transparent white background, and the icon itself is too small. So maybe if in the future you could address that as well it would improve the add-on even more! :)

This review is for a previous version of the add-on (v1.1.1-signed.1-signed). 

Thanks for reply

I added on/off feature in new version.

Here is link to download new version of addon: