Rulez !!! I think I just found the RSS reader I was waiting for : Web-based, open-source, perl based if possible (don't know PHP, Python or Ruby) and ... read the news by date : last posted articles/blog entries. This was the killer feat I couldn't find on most of the RSS reader and which (IMHO) is the one reason you would use a RSS reader : to save time.
I was thinking about this : why most of RSS readers/aggregators don't allow you to read the feeds by date ? And I think this is because some RSS version (0.9 and 0.91 and maybe 1.0) don't have date/time on entries. And so, the only way to have date/time on entries when you don't have them is to poll the RSS frequently (< each hour) and fetch the new entries on a database, add the date/time of the fetch and sort them after that. Which means a pretty heavy system. I eventually came to the conclusion that I need to build one by scratch with all this overweight. Now I think I will try Meerkat before ...
I don't have a O'Reilly Account now so I don't know if I will create one or install a copy of Meerkat on my PC but I think I will use it.
Does someone has feedback on Meerkat to give me ?