Perhaps this will be useful to someone else. I looked for a ready-made script like this but couldn't find one so had to write one, even though I imagine scripts of this sort are very common. The script, when called, checks the database to see if five or more minutes has passed since the site's Twitter account was last checked for updates. If so, then it scans the rss and puts any new tweets into the database. The idea is that you store your Tweets in a database and display the table instead of directly accessing the Twitter rss. That way, you can stay under the rate limit.
The URL: http://classicaspreference.com/aspexamples/PHP_for_twitter.asp -- there is also a Classic ASP version.
