New Roland MC 303 and 505 group, with discussion and downloads.
http://groups.yahoo.com/group/RolandMC303505

Yamaha SY77/99 group, files section and lots of discussion.
http://groups.yahoo.com/group/sy-77

New Roland W30 sampler support group, lots of downloadable samples and docs.
http://groups.yahoo.com/group/RolandW30Samplers

Roland JX series web group, lots of info here, sounds and apps, for MKS series as well.
http://groups.yahoo.com/group/rolandjxanalogs

Roland MC300/500/50 and MKll series sequencer support group, tons of files and information.
http://groups.yahoo.com/group/mc-50030050mkllgroup

New Korg M1/M1r and EX series group, sound patches, info and discussion.
http://groups.yahoo.com/group/KorgM1M1Rex

Old Korg X3 yahoo group, still alive and kicking, lots of info and user’s.
http://groups.yahoo.com/group/korg-x3

Roland JP8000 web group, info, patch sharing and more.
http://groups.yahoo.com/group/JP8000

New Ensoniq SQ80 workstation Yahoo group, tons of docs, patch banks, and Song/sequence sharing. http://groups.yahoo.com/group/ESQ1SQ80

Ensoniq VFX/VFXSD/SD 1 series web group, features patch sharing and info, many members.
http://groups.yahoo.com/group/Ensoniq-VFX-SD

Ensoinq TS10/12 Yahoo group, Info and group discussion.
http://groups.yahoo.com/group/ENSONIQ-TS

New EMU Emulator lll web group, new group setting up sample sharing site, info and docs.
http://groups.yahoo.com/group/EmuEmulator3

Alesis D4/Dm5/DmPro Yahoo group, file section, info and discussions.
http://groups.yahoo.com/group/AlesisD4DM5DMpro

Emu EMAX, EMAX2 group. EMX software, samples, SCSI info, tech talk and more.
http://groups.yahoo.com/group/emax

Best Ensoniq Mirage Group around, sample sharing, manuals and docs, discussion.
http://groups.yahoo.com/group/miragelives

The Roland S series sampler Yahoo group, docs, apps and info nice group.
http://groups.yahoo.com/group/RolandSamplers

Best Roland D50/D550 sound bank group, sound bank sharing, discussion and info.
http://groups.yahoo.com/group/D-50_Soundbanks


Emu Emulator ll list, tech talk, info, docs and more.
http://groups.yahoo.com/group/emulatorII-list

Best Akai S1000/S1100 Sampler group, Docs, apps and many great links and info.
http://groups.yahoo.com/group/akaiS1000S1100Samplers

Best Yamaha DX series group. Many members, large files section, apps and info.
http://groups.yahoo.com/group/YamahaDX