Scraping progress indicator

Does anybody knows how to make the web scraper show us its progress? How much time is left till the scraping will be done?
I guess it would be something like calculating how much time it takes to scrape one record and multiply it with the remaining number of items to scrape?
Any ideas??

(submit this to feature requests)

I too would love this. My scrapes take hours, because I use large delays, but how many hours is variable.