Last updated at 10:03 pm UTC on 3 June 2013
OOPSLA is the annual ACM conference on Object-Oriented Programming, Systems, Languages and Applications. It is now part of the Splash! conference.
See OOPSLA on wikipedia for updated info
A number of Squeakers usually attend the OOPSLA conference each year, including folks from original Squeak Central and the current board.
There is always a Squeak "Birds Of a Feather" (BoF) session on one evening of OOPSLA - traditionally on tuesday evening. At the BoF, a bunch of Squeak/Smalltalk folks gather together and give informal demos/presentations of things that they're doing with Squeak. We usually sign up informally to get a grip on how many presentations there will be.
The last couple of years (well, perhaps not last year though), there's also been an informal "Squeak Bug Fixing Party" at the Camp Smalltalk area of OOPSLA, in which anyone is free to participate. See http://wiki.cs.uiuc.edu/CampSmalltalk/Squeak+Bug+Fixing+Party.
See also Squeak Events and (out of date, add more ) Trip Reports.
Some past OOPSLAs:
Modules Discussion at OOPSLA 2002