so don't worry if you don't gain 20 users per day at the beginning Grin
Are there actually more than 20 people using Xith at all?

nono, just kidding!! I am following our site statistics and I will keep you posted on how many people hop over from Xith to FengGUI...
I dont see Xith's HUD in direct competition to FengGUI actually. HUDs are relatively non-interactive (well okay, from what I can tell, Marvin added several interative functionalities already). In addition, FengGUI is more about layouts, windows, lists and stuff, although you can also easily compose HUDs. If you just want to build a console-game like menu, you are probable better of with Xiths native HUD. But as soon as you require complex GUIs like in
Transport Tycoon, Civ, Anno, etc. etc., you are certainly good advised to have a look at FengGUI.
However, we have the plan to further improve the support for console-game like menus in the future. Speaking of console-game like menus, did you know that
Waterstorm uses FengGUI?

Johannes