Autogroup

Description :
AutoGroup will automatically accept group offers from either anyone on your friends list or anyone at all.

Here's the list of commands:
Basics:
/ag on - Turns AutoGroup on. (Default)
/ag off - Turns AutoGroup off.

Auto-Accept Options
/ag accept friend - Automatically accepts group invites from friends supressing the normal popup. Group invites from anyone else act as usual.
/ag accept guild - Automatically accepts any group invite you get from a guildmate. Group invites from anyone else act as usual.
/ag accept both - Automatically accepts any group invite you get from a guildmate or a friend. Group invites from anyone else act as usual.
/ag accept all - Automatically accepts any group invite you get, supressing the normal popup.
/ag accept none - Does not auto-accept group invites. (Default Mode)
/ag accept emote blah - Sets an emote to be performed when AutoGroup accepts a group invite for you. For example, '/ag accept emote cheer' would do the /cheer emote when it accepts a group invite for you. If you want to make a custom one, use '/ag accept emote em does a little dance', replacing 'does a little dance' with your custom emote.
/ag accept emote - Clears the emote-on-accept.
/ag accept whisper blah - Sets text to auto-whisper when AutoGroup accepts a group invite for you. For example, '/ag accept whisper Thanks!' would whisper the person inviting you with "Thanks!".
/ag accept whisper -Clears the whisper-on-accept.
/ag accept help - Shows auto-accept options.

Auto-Decline Options
/ag decline nonfriend - Automatically declines group invites from people not on your friends list, supressing the normal popup. Group invites from friends act as usual.
/ag decline nonguild - Automatically declines group invites from people not in your guild. Group invites from friends act as usual.
/ag decline both - Automatically declines group invites from people not in your guild or not on your friends list. Group invites from friends act as usual.
/ag decline all - Automatically declines any group invite you get, supressing the normal popup.
/ag decline none - Does not auto-decline group invites. (Default Mode)
/ag decline emote blah - Sets an emote to be performed when AutoGroup declines a group invite for you. For example, '/ag decline emote rude' would do the /rude emote when it declines a group invite for you. If you want to make a custom one, use '/ag accept emote em raspeberries.', replacing 'rasberries.' with your custom emote.
/ag decline emote - Clears the emote-on-decline.
/ag decline emote - Clears the emote-on-decline.
/ag decline whisper blah - Sets text to auto-whisper when AutoGroup declines a group invite for you. For example, '/ag decline whisper Sorry, soloing.' would whisper the person inviting you with "Sorry, soloing.".
/ag decline whisper -Clears the whisper-on-decline.
/ag decline help - Shows auto-decline options.

Additional commands:
/ag status - Shows AutoGroup's current status.
/ag help - Lists all commands for AutoGroup.

PS: i'm not the author of this addon, but since this is incredibly useful and have no real equivalent, i thought i would post it since i couldn't find it anywhere.