In Clash of Clans what does XP do when donating troops to clan?
XP really does nothing. You just receive XP for donating troops. Like the other answers mentioned, XP is a rough indication of how much investment a player has made in their account. Some clans will accept players with a certain minimum level, but the level doesn't necessarily indicate the strength of the player.
In Clash of Clans when requesting troops from clan, can one do it to often?
When you request troops, you have a 20 minutes countdown before being able to request again. This is what limits how often you can request troops.
UPDATE: Due to an update, that countdown now depends on the level of the clan. The countdown changes to 15 minutes at lv 2 and 10 minutes at lv 7.
I notice when you donate you get XP. Is there some way to see another players XP
You cannot see another player's XP, but you can see their current level.
and then if it's negative or something no one would donate troops to you?
No, how people decide to donate or not is up to them. Some people always donate troops, some people never donate troops... everyone has their own way. I personally donate troops only:
- if a new member has at least a few donations
- if an older member has at most 3 times the number of received troops than donated troops (i.e. if someone has 200 donated and received troops, I would give them, if they have 1000 received troops and 10 donated troops, I won't)
So what I'm really wondering is how do I know if I'm requesting too many troops compared to how many troops I donate
It all depends on the players you are playing with. If you're in a clan where almost nobody donates troops but only requests, well, you are bound to be donating more than they do and you get nothing (beneficial to your account besides some exp) in return. In an ideal clan, you will have a lot of donated and received troops for all members.
One rule of thumb I have been seeing in many clans is the 1:3 ratio of donated against received troops, which means that as long as you have less than 3 times received troops than donated troops, you are doing good. Exceed that ratio for received troops and you will be considered to be requesting too much, for such a particular clan.
but from the answers it sounds like there's no connection?
Right, there's no connection and it's really up to players and how they believe the system to be. You are free to decide how you want it to work, but don't remember to be fair to your fellow clan mates.
I wouldn't want to be in a clan where no one donates troops. Castle troops are useful to defend your base and save your resources, and they can be what turns a defeat into a victory in an attack.
I hope I have addressed all your points :)