Within the last month or so there are tons of M3S episodes on Youtube. Most claim to be full-length, but a lot of them are 21-22 minute, edited length, taken from TV Land. Real full length episodes for S1 and S2 appear to be sourced from the CBS DVDs, for S6-S10 are from KONG-TV. Old syndication cuts from S11-S12 are from Odyssey.

I guess they'll be there until CBS makes another copyright claim.