When I use this /tellraw command there is a bug :
/tellraw @p [{"text":"Welcome ","clickEvent":{"action":"run_command","value":"/setblock -896 65 -325 minecraft:stone"},"hoverEvent":{"action":"show_text","value":"Welcome..."}},{"text":" to my land!"}]The second text has the same "clickEvent" et "hoverEvent" than the first text.
Works as intended. As of Minecraft wiki (http://minecraft.gamepedia.com/Commands#Raw_JSON_text ):
extra: A list of additional objects, sharing the same format as the base object.