So, I have spent a solid part of the weekend thus far playing with the Eve API and Google Docs Spreadsheets. I have learned a few things along the way... like URL length is limited to 2048 characters!
This matters because Google Docs has a limit of 50 XML calls. So, the total number of items I can price based on Eve-Central is limited by these two things and the need to make other calls (like for corporate assets from the API).
This weekend's sheets are focused on capturing corporation asset value and member market information (second sheet). May even have a basic "market killboard"
built for LDIS by the end of the weekend.
What have you built using the API?
Edit: for xpath calls, using parenthesis does what you think it would do.
//row[@duration>0 and (@stationid='1' or@stationid='2')]/@what I want