A bit of chatter tonight about the fact that RSS reader SearchFox is shutting down. Users got the word in a short email from Searchfox’s Esteban Kozak. We emailed Esteban for an explanation, but he declined to elaborate, saying a formal announcement would be coming soon. SearchFox tried to distinguish itself by personalizing your feed-reading experience. SearchFox monitored what feeds you found interesting and moved those entries to the top of your in-box. We played with SearchFox for a time when Bloglines was having so many problems. We saw the potential. But it didn’t quite click with us.