I think this is the wrong analogy... The parable seems to say that if you spread your seeds across many areas, it's bound to grow somewhere.
That would be a good analogy if the post was actually about spreading ideas in as many bubbles as possible and hoping one bubble picks it up.
The post is actually about making 1 idea of high enough quality and insight such that it can be transferred from one bubble (yours) to the next by the "edges".
So you'd have to find a parable that speaks of getting a good seed and planting it in your garden, in the hopes that the flower that grows from it spreads its seeds to your neighbors!
3 And he spake many things unto them in parables, saying, Behold, a sower went forth to sow;
4 And when he sowed, some seeds fell by the way side, and the fowls came and devoured them up:
5 Some fell upon stony places, where they had not much earth: and forthwith they sprung up, because they had no deepness of earth:
6 And when the sun was up, they were scorched; and because they had no root, they withered away.
7 And some fell among athorns; and the thorns sprung up, and choked them:
8 But other fell into good ground, and brought forth fruit, some an hundredfold, some sixtyfold, some thirtyfold.