Opinions on FX?
On popular songs i think they’re good because it shows you’re doing something but not after that. What do you think?
More the better! Layer em up, add some air horn to let everyone know this is a remix, drop in some serious flanger as well if you really wanna get the party bouncing.
+1 
I don’t feel under any compulsion to ‘show I’m doing something’
All this and more. Do not neglect your phaser.
If, like some (but not me!), you find air horns are played out, you can substitute them for alien bleeps, or digital bomb drops. 8 bit bomb drops are best.
Oh and if you can find a sample along the lines of “drop the bass” or “DJ!” Use them several times per track. You don’t want the audience to think you are just playing other peoples music.
Best thread of the week.
Don’t forget to overuse the instant gratification mapping, always. Beatmashing a song to death is great. And please don’t experiment with your own combination of fx and you certainly don’t want to be subtle so the more destructive the fx, the better.
Remember, all about djing is about fx and how to use them, I know, I’ve seen all those videos on youtube (and I made some).
Did someone mentioned air horns yet?
QFT.
Originality is to be avoided at all costs. Punters only like to hear what they already know.
You mean you guys don’t just put on a podcast and fistpump all night long while pretending to be turning knobs? Wow…
Please ignore all the sarcasm above. There’s quite a few people out there in the industry who are terrified of FX because it means they can’t just beatmatch the end of one track into the start of another then browse Facebook for 4 minutes.
Don’t forget “damn where’d you find that son” sample to! 
Seriously though, use efx sparingly. A track is auditioned 100’s of times before a finished version to make it the best it can be. Over use of efx ruins it.
I enjoy layering when playing techno, adding a slighty bit of reverb and delay now and again, but as Zimfella says, a track has been worked hard on by the producer - don’t ruin it.
Do TONS of rewinds. like every 16 beats. Especially if you’re playing minimal techno.
And of course, don’t forget to NEVER let ANY track play for more than 30 seconds. Also you should always have at least 3 tracks playing at a time, along with the samples and FX. If you’re not getting through 120+ tracks per hour then you’re just not trying and frankly are a caveman DJ.
Haha. Not quite, but any less than 30 and you are, in fact, lazy.
please don’t spread this shit like its some kind of DJ rule! Absolutely nothing lazy about playing less than 30 tracks.
Shhhh… let people have their fun with the “wall of sound” method of “mixing”. You know - 3-4 tracks, mashing FX and beatpoints until it becomes a wall of noise!
I mean, what do the producers of the original tracks know about song structure and sound eh?
It depends on the genre you’re playing. And if you’re just playing the tracks from start to finish, then why not just use iTunes instead of all our fancy gear? 
Oops. Silly me.
Really, just stop typing. You embarrass yourself with every word.