PHP script to check website ranking and link popularity and produce graphs.
A PHP script that allows someone to enter a domain name and a list of keywords, then save them to a mysql database or a file.
Periodic cron job runs another script that gets the backlinks for each site (in yahoo, via linkdomain) and saves the value (just the number) along with the date. Also checks the site's ranking in the top 100 results of Google, Yahoo and Bing and saves the values and date.
Homepage displays a list of the domain names entered in the system. Clicking on one displays the stats page, with graphs for keyword rankings (all keywords in same graph, different colors) as well as link popularity for all dates.
It would be nice if some way of determining the date range of the graphs was offered, perhaps a combo box on the page with a submit option.