I've been having trouble getting my buy orders to remain the top spot for a while now, and I think that coming here I have found the reason, and perhaps the solution. I suspect someone(s) is using the near realtime TP data from the API to watch their own bids and setting alerts when they have been outbid.
Personally I think of the TP as the ingame economic competitive arena, and that distributing near realtime TP info, is akin to broadcasting the location of players in an spvp tournament realtime to the opposition. So am a little hesitant about using the api for this purpose.
2) So I would like to ask Anet, why do they see the realtime distribution of TP data as okay since it gives an advantage over its non-technical player base? Was the data being harvested anyway, so you opted for a more readily available source? Could Anet not just add a 2 hour delay so it evens the field for the non-techies?
3) Am I late to the party, are sites already providing this "service" for people?
4) Most importantly, can I use the api, without fear of a ban hammer, to get revenge? Sweet, sweet, REVENGE!