Hmmmm - and have you noticed that the changelog incorporates almost all of these technologies?
I think the poster merely stated the most recent innovations to show ones that the majority of the slashdot posters would be familiar with.
Check out this link, for a list of Sun contributions...
http://mediacast.sun.com/users/pgdh/media/sum_of_parts_v2.8a.pdf
I'll highlight just a few, probably found in your beloved *BSD* as well..
NFS, NIS, XDR, Posix, SVR4, mmap, Streams, ld.so, diskless boot, autofs, rpc, news, abi, xdr, vfs.... /proc, truss, nsswitch, ptools, dynamic kernel, smp, domains, libthread, nis+, vold, jumpstart
hls, mpss, pools, fss, zones, brandz, s8ma, mdb, dtrace, fma, pgrep, smf, mpo, least privelege, zfs
and for additional software contributions...
JAVA, OpenOffice for starters...
Now.. this list is not all inclusive... but I think it shows a more than fair share of technologies, a lot of which are considered to be *common* tools, that would either not be here, or would not be what they are today, without Sun's contributions...