Memory Retention

came across this interesting article here today about memory, how it works, its storage and retention. havent read all of it yet, looks pretty fascinating.it tells about a spacing effect, how people can recall well if they are reminded of or themselves remind/look up things they have learnt, at the right time, just when they are going to forget it.... have bookmarked it and will definitely read it fully....it also tells about a software called super memo developed by Wozniak....this software is supposed to analyze when people will forget things and remind them of it. hmm....