I agree about networks running re-runs in the middle of a series' "year" as a pet peeve, plus the number of episodes keeps on shrinking.
In a related tangent, many members of the public are not aware of this, but series' regulars usually aren't on "easy street". Most series' actors that are in re-runs from years past get little or *NO* residuals, so IMO *good* for the Friends' cast! They are getting their money up front. The series' producers didn't HAVE to pay them more.
This list of "no residuals" series includes "The Honeymooners" (except for the estates of Jayne Meadows and Jackie Gleason), "Leave it to Beaver", "Star Trek"(original), "Andy Griffith" and many more from TV's so-called "Golden Age". The networks and the production companies reap millions off of most series. Nobody realized(not even the production companies or networks - it was just dumb luck on their part) that there would be so much syndication money, but that is the way these old contracts were written. Like most old-time rock 'n' roll/blues/jazz performers, these actors are getting *NOTHING* from the fruits of their labors, while others get to reap the rewards.
For instance... You might have seen all those infomercials for the "Dean Martin Variety Hour" or for his "Celebrity Roast". *NONE* of those performers were getting any money from the sale of these shows. Recently, a 1 million dollar judgement was won against the folks who own the rights to the series, because they were selling these episodes without compensating the performers. I'm sure the only reason that the performers got any money in the Dean Martin case is because future sales of the episodes were not covered in their contracts.
(In another sales situation, in this case concerning a Disney movie, songwriter/performer Peggy Lee sued Disney because they sold VHS tapes of "Lady & the Tramp" without paying her additional compensation. Disney infringed on her rights as the composer. She won.)
I guess what I'm trying to say is please don't lay most of the blame for fewer epsodes at the actors' or performers' feet.
agnes!