It depends on which site. NerfHQ Wiki is accurate, but provides little information. The NerferWiki is pretty much a rehash of NerfHQ Wiki. The two Wikia wikis are the most accurate. Nerf Blaster Wiki has a lot of small pages, but includes info about non-nerf, old blasters, accessories and Super Soakers. Nerf Wiki has less pages, but has more users and pages about new weapons and accessories, however there exists no info about non-nerf or old Super Soakers.
There is 3, but one is inactive. Nerf Blaster Wiki has only one contributor, but the other one has lots. Nerf Blaster wiki has more pages though.
Nerf Blaster Wiki provides a good list of blasters. Here's the link. http://nerfipedia.wikia.com/wiki/List_of_Nerf_Blasters
The SwarmFire was rated 9/10 on Nerf Wiki from Wikia, in which it received 10/10 in reliability and capacity.
A Nerf ball would go further but, less accurate.
There are several Wikis around that have quite a bit of information on all Nerf blasters that have been released. In my opinion, the best is: http://nerf.wikia.com/wiki/Main_Page
Always.
For everything but the Lanard and Scatter Blast products you should check out Nerf Wiki, as they are quite reliable. For everything but the swords, axes and shields check out Nerf Blaster Wiki, which along with Nerf covers Lanard, Buzz Bee, Koosh, Larami, Super Soaker, Power Popper, Marshmallow and Cyclone Shoot among a few to name.
according to WIKI, no
If you don't have a Nerf gun yet I would suggest getting the new Nerf elite strongarm aka the new version of the maverick. I would choose this because it is easy to use it is powerful and accurate it is also not massively big. If you already have a few Nerf guns and ammo I would suggest getting something rapid fire like the Nerf elite styfe or the Nerf elite hail-fire.
use google. wiki is not accurate
There is Nerf basketball, Nerf swords, Nerf guns, Nerf footballs all sorts
no its Nerf Nerf means not much power