The first fan-fiction Star Trek I watched was "New Voyages" a number of years ago. As a fan of Trek since TOS was in syndication in the early 70's (I was only 4 in 1966!) I have to admit, I was quite pleasantly surprised! Then, along came Star Trek Continues, running in pretty much the same vein, and with similar quality to "New Voyages".
As others here have said, this really *IS* like watching "lost episodes" from TOS! Both my wife and I really enjoy this! It is like getting brand new Star Trek stories, again... just a LONG wait between each one.
It is also quite telling, when you see that both of these high-quality fan-fiction productions are actually getting the ORIGINAL actors and actresses to reprise their TOS roles in various ways... this is where "time-travel" stories are actually being used in an enjoyable and meaningful way. For example, "World Enough and Time" (By New Voyages) was only the 2'nd Star Trek story to bring tears to my eyes! (The first was "Inner Light" on TNG.) Yeah, it was THAT good!
I look forward to watching what BOTH of these top-notch fan-fiction production groups do in the days ahead! If the Powers That Be would REALLY PAY ATTENTION, they would see what the majority of the Star Trek fan base REALLY WANTS.
Those "new" movies don't even deserve more than this one-line mention. I only saw the 1'st one. That did it for me. No more.
Live Long and Prosper, New Voyages and Star Trek Continues!!