Well *looks both ways then prepares to toot a large self-owned horn*...
I did just crack into the top 1000 Zorkers in terms of total XP
I'm halfway through Level 52. For those of you who are moving in that direction, Level 50 is a pain to level past (need more than 1 million XP for that single level). After that, unless you're buying coconuts and using them for AP, or using a sidekick that gives AP (unlike my accountant), then you're looking at a good 2+ weeks of exploring per level.
Of course, now that there is no potions timer, you could spend $700 and level from 1 to 100 in a day