One of the truly powerful services, I will really miss. Mrs. Meyer squeezes out things at Y! like a lemon.

EDIT: added OSS & Commercial alternatives

free or commercial:

    [1] http://createfeed.fivefilters.org/
    [2] http://www.feedsapi.com/ 
    [3] https://theenginuity.com/search/
    [4] https://zapier.com/
    [5] http://www.elastic.io/
    [6] https://ifttt.com/

open source:

    [1] https://github.com/olviko/RssPercolator
    [2] https://github.com/fogbeam/Neddick/
    [3] https://github.com/cantino/huginn
    [4] https://github.com/fullscale/pypes
    [5] https://github.com/jparkrr/ISyTT
    [6] https://github.com/atask/shifttt
    [7] https://github.com/KLVN/F7_T7_RSSFeed