The PUBLIC Blog did a recent post on outwitting thieves using unconventional storage/locking techniques. Mentioned in their post + on the top of my list of what ever bike friendly city needs... bicycle corrals. I loved using them in Portland while visiting in 2009. Strategically placed and typically found in public gathering spots such as in front of cafes - they provide a convenient and secure option to lock up. Here's hoping more cities (hello, NYC DOT) will catch on!