Ok here it goes: If nodes are distant from each other buds wont have time to bond together to form a bigger bud ( almost like a flower top). My friend showed me that technique and uses it on his grows showed it to somebody else that I know and it worked for him as well. Start from the begining of the branch(stem) and pinch/bruise internode littly, but be careful not to break the stems "skin" with your finger nails . You just apply a little pressure with thumb and index finger to reduce flow in the stem(internode) a little by causing bruising (dont crush it) . Repeat for each new internode/growth that comes out going up the branch(stem) . You only do this when the new internode is about 1 inch or close to your desired internode length( if you have enough space for finger and thumb that's a good sign). So this reduces node spacing. Because you temporary slow the growth of the internode. You will notice when you bruise the stem/internode it will swell up where you bruised it and make the stem bigger to compensate and push more juice/fluid up the stem, making the stem stronger. Dont over do it at first, it's a gradual process and make sure your plant is strong and healthy. Practice on one plant , just to get the hang of it. You never do tests/practice on all your plants. it's better this way!

Maybe you will like it, maybe you wont.But it's out there and now everyone can read it. So enjoy!