I've completed a recipe for Ecnomia. Hope it will be added in the future version of Calibre.
Code:
from calibre.web.feeds.news import BasicNewsRecipe
class AdvancedUserRecipe1314326622(BasicNewsRecipe):
title = u'Economia'
__author__ = 'Manish Bhattarai'
description = 'Economia - Intelligence & Insight for ICAEW Members'
language = 'en_UK'
oldest_article = 7
max_articles_per_feed = 25
masthead_url = 'http://economia.icaew.com/~/media/Images/Design%20Images/Economia_Red_website.ashx'
cover_url = 'http://economia.icaew.com/~/media/Images/Design%20Images/Economia_Red_website.ashx'
no_stylesheets = True
remove_empty_feeds = True
remove_tags_before = dict(id='content')
remove_tags_after = dict(id='stars-wrapper')
remove_tags = [dict(attrs={'class':['floatR', 'sharethis', 'rating clearfix']})]
feeds = [(u'News', u'http://feedity.com/icaew-com/VlNTVFRa.rss'),(u'Business', u'http://feedity.com/icaew-com/VlNTVFtS.rss'),(u'People', u'http://feedity.com/icaew-com/VlNTVFtX.rss'),(u'Opinion', u'http://feedity.com/icaew-com/VlNTVFtW.rss'),(u'Finance', u'http://feedity.com/icaew-com/VlNTVFtV.rss')]