+1 Scrapy comparison please Can you compare to scrapy as requested by other posters. Why could you not build on top of scrapy and leverage celery for scheduli

+1 Scrapy comparison please Can you compare to scrapy as requested by other posters. Why could you not build on top of scrapy and leverage celery for scheduling etc (http://www.celeryproject.org/ http://www.celeryproject.org/) What is the immediate value add to using pyspider ?