Some people use approved non-SL browsers in Second Life that are not Viewer 2 based. These browsers don't enable "display names" to be chosen and displayed , which means that a massive number of avatars with names like "Joeblow12345 Resident" quickly gets really, REALLY old. Also, people using Display Names can now disguise themselves under the name of any other avatar in SL, pretending to be someone else, and send messages that appear to come from the other avatar. That seems to be a huge privacy issue, and possibly a security issue as well. Also, long-term residents have taken a great deal of pride in their unique names, and now every newbie is named like a lemming. I'm not sure what is prompting Linden Labs to cease providing interesting last names from which to be chosen, but the availability of only ONE last name absolutely prohibits using easy first names and requires more and more long numbers to be necessary. But never fear -- while the creativity factor has been removed from really important things like the name your avatar will be stuck with for the rest of their SL life, the creative coding necessary to provide important features like the option to have "bouncy effects" at this time appears to be getting the bulk of LL attention.