Some irrelevant now since they will bind for 3.3 and gear will be easy to get but:
- Buy PvP weapons form the guy next to the PvP mission terminal, the lowbie ones for 900 comms
- Hold on to them while PvPing.
- Refund them before their timer expires and buy them back keeping a rotating stock of weapons in your bag
- Do this until you hit 60
It's a way to by pass the comm cap. You can have a bunch of weapons in your bag when hit cap (or a new tier of gear comes out) in addition to whatever comms you have to buy gear. So when you hit cap or the new gear comes out you buy stuff, refund weapons, buy more stuff and so on.
Thanks @maverick for the link.