Safari…
My hopes that Safari will do a better memory management than Firefox were not fulfilled, unfortunately. While browsing with 29 opened tabs in 3 or 4 windows, Safari occupied over 700 MB of memory out of which only 170 MB was shared with other applications. After I restarted it (it crashed, actually), it took only 95 MB of memory with 68 MB shared with other applications…
Before the crash:

After the crash:
