SmartBots service allows you to rent a Second Life group inviter, chat and notices manager bot.

https://www.mysmartbots.com

SmartBot will:
- give out a direct group invitations to all visitors of your parcel(s);
- allow you to read your group chat over web, and eject spammers;
- send group notices from web and by schedule.

https://www.mysmartbots.com