RUNE SHARDS DONATION - UPDATE:
A system in Beta is trialing whereby one can swap one unwanted Rune Shards for 10 Knowledge Points in your own Ancient Wonder, or 15 KP if you donate to a friend. This system is apparently going to be trialed on the EN server first before it is released generally to the other Live servers.
A 'problem' we have encountered in Beta is that some players have up to 500 Rune Shards of several types which they will never use, so there is a frenzy of donation of these KP to all the fellowship members, which helps everyone to upgrade their Wonders very quickly - making more powerful cities, and increasing fellowship and personal ranking points. Unfortunately if one player receives too many 'gifts' this triggers a block on receiving any more - which is done deliberately to slow down those players who have multiple 'Push Accounts', used to feed themselves KP and goods.
This limit is only a problem if one player gets KP bombed by a bunch of well-meaning people in the same day and they have not returned any KP yet. And all that happens is no one can give that player any more KP until they balance it out by giving back. If someone does receive too much in one day, players will see a message in-game that tells them that player cannot receive any more KP right now, so the designers are not keeping that part a secret, just the exact numbers.
This is not something new! - the limit has always been there to prevent players operating small Push Accounts from which they deluge their main city with thousands of Knowledge Points. That is not allowed - 'alt' cities are allowed, but they have to stand alone in their own right and must more-or-less receive as much as they are giving. The reason the limit is suddenly newsworthy is that when someone like myself has thousands of unwanted Rune Shards and starts giving them generously to friends, it is possible for those players to receive rather more KP in a day than they ever did before.
Obviously InnoGames cannot give more details about this limit - because that would be playing into the hands of those who love to bend the system rules, helping them to find a work around strategy.
We have been asked not to discuss the details of this limit further in the Beta Forum, as InnoGames are not going to release the precise workings of their anti-Push measures - which is their right, of course.