How much XP stake % year ?
mentioned at the website 120% annual interest per years,its very ideal for long term
not too much,not too little
Let's call on the community's contribution to be able to add more exchanges. I believe the price of it will go up as it is good for all, the market is not big enough for the coin to get good rates. compared to its number 
i think we have enough market for right now ,the important things is how to to build the communities grow time by time
after that i'm sure a lot of exchange will compete to add xp on their market