Woah, lot of interest in this idea. Good, good. Okay, some more details:
Traps vs Seals
Traps have a couple of advantages over seals. For one, they are much easier to use (needing to be a seals master to create and activate one versus just throwing the trap out and hitting the pedal). Another is that it's much easier to put ghosts into the containment unit with a trap rather than a seal scroll because the traps and containment unit are essentially part of a single system. And thirdly, traps are in general more durable than sealing scrolls and other means to carry seals around. Durable as in less likely to catch on fire due to the proximity of the particle streams.
Seals do have advantages over traps as well though. Seals can be adjusted and added onto to increase the amount of power they can hold or adjust what they're already containing. Traps are very static by comparison-If you want to hold a bigger, more powerful ghost than the standard traps can contain, you need a bigger trap. Seals can also, with the proper training and knowledge, be used to seal virtually anything into nearly anything you can imagine. Rocks, people, you name it. Naruto and Sakura would definitely look to combine both seal use and ghost traps into their business to make it as effective as possible, because there are many entities you just can't trap or defeat by conventional Ghostbusting means.
Which means Jiraiya will be teaching Naruto sealing.
Number of Ghosts for the Bijuu to Eat
Locke69 is right, there were a LOT of ghosts, demons, goblins, what have you in the containment unit (considering that the cartoon series of Ghostbusters is canon). Thousands at the very least. More than enough for a few Asian demons that the Ghostbusters caught on one of their overseas adventures to devour, grow stronger from, and eventually become the Nine Bijuu.
However, I do like the idea of the Stay Puff Marshmellow Man being sealed inside Gaara. ^__^ All of his foes would experience VERY sticky deaths, heh.
Now, we're forgetting a very big part of the story: What would be the reactions of the other characters (personally) to Naruto and Sakura's ghostbusting business?
Traps vs Seals
Traps have a couple of advantages over seals. For one, they are much easier to use (needing to be a seals master to create and activate one versus just throwing the trap out and hitting the pedal). Another is that it's much easier to put ghosts into the containment unit with a trap rather than a seal scroll because the traps and containment unit are essentially part of a single system. And thirdly, traps are in general more durable than sealing scrolls and other means to carry seals around. Durable as in less likely to catch on fire due to the proximity of the particle streams.
Seals do have advantages over traps as well though. Seals can be adjusted and added onto to increase the amount of power they can hold or adjust what they're already containing. Traps are very static by comparison-If you want to hold a bigger, more powerful ghost than the standard traps can contain, you need a bigger trap. Seals can also, with the proper training and knowledge, be used to seal virtually anything into nearly anything you can imagine. Rocks, people, you name it. Naruto and Sakura would definitely look to combine both seal use and ghost traps into their business to make it as effective as possible, because there are many entities you just can't trap or defeat by conventional Ghostbusting means.
Which means Jiraiya will be teaching Naruto sealing.
Number of Ghosts for the Bijuu to Eat
Locke69 is right, there were a LOT of ghosts, demons, goblins, what have you in the containment unit (considering that the cartoon series of Ghostbusters is canon). Thousands at the very least. More than enough for a few Asian demons that the Ghostbusters caught on one of their overseas adventures to devour, grow stronger from, and eventually become the Nine Bijuu.
However, I do like the idea of the Stay Puff Marshmellow Man being sealed inside Gaara. ^__^ All of his foes would experience VERY sticky deaths, heh.
Now, we're forgetting a very big part of the story: What would be the reactions of the other characters (personally) to Naruto and Sakura's ghostbusting business?