I will change the size of the graph a little (I'm making some changes so it will be in the next release)
about furniture, if for example you are looking for a table, it will show the auction prices only.
for other items... you can search for them (in the top panel), but it won't show results... but at soon as TS add them... it will just work without any change.
about checking the actual position in the game... that was part of the first feature of the site (Locations). and now it is doing it all the time... :) I need to make a lot of changes to change that. so it will be that way for some time... :)