in terms of performance number of bids number of inquiries location of inquiring users and the like as well as track or manage his sold inventory for example by doing so the user can visualize sale trends hotspots of interest for his goods or services and demographics of previous buyers all of which can facilitate future sales for the user for example a seller can use one or more filters to optimize his her buying audience and exposure to potential buyers by viewing sold or current inventory based on location of demand or interest if there seems to be a greater demand for bicycles within 10 miles of the local university the seller may decide to move his her inventory closer to the university or offer greater discounts or free delivery to university students e g as indicated by their domain or email group in addition to manually entered searches the user can also have one or more standing searches such searches can be periodically or continuously run in such a way that the listing service may be constantly monitored for the desired listing for example suppose the user is currently interested in babe ruth memorabilia but does not have the time to look for its availability instead of manually performing this search daily weekly or even hourly the system can be programmed to automatically perform the search thus the user 39 s main search page 400 can also list these standing searches and include the number of new or total listings retrieved on a particular day for instance or for all time furthermore the main search page 400 can include some of the user 39 s current location 430 and trust 440 parameters.