ram usage chrome - why so much?

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http://crunchbanglinux.org – I havent used my old eee pc for a while, it has february 2011 statler on, I apt-get upgraded everything a few days ago.I find it very strange that when I use the chrome browser as only open program and open about 5 or 6 tabs (all mainly news-sites with text, some pic-thumbnails, no video or flashy flash and ofcourse adblock enabled) - my ram usage skyrockets to about 500mb (which maxes out this tiny computer), sometimes chrome hangs for minutes or even crashes.. I remember I could have tons of more tabs open - have  the websites of today become so packed full with data? and what is it? i (HowTos)