So what's wvw like?
I've played it extensively and I can say there are a few ways you can play it...
Solo/Small Group: Take camps,
avoidrun away from zergs/bigger groups, stealth-ninja a tower, fight other Solo/Small Groups, be a gank group, react/defend camps/towers from other not too much bigger groups... chance of success goes up exponentially by level, then by quality of gear... Skill and knowledge is the equalizer in the end if variation in level/gear is not too much.
You don't really need a teamspeak for groups like this... it can even be led by a Commander... actually, it is most effective having one of the players lead if you are in a small group. Know where to go next and predict movement of enemy zerg to avoid them.
This is much much harder to do against organized servers, where they have people actively defending camps/patrolling the place/watching the maps to hunt your little group...
Organized Teamspeak Group/Guild, Medium to Large: Take camps/towers/keeps, set up and protect siege encampments, fight other 'zergs', stealth-ninja towers/keeps.
Basically, the core group of 'get err done' is the organizing guild in question, plus some non members who are in the teamspeak.
Non-Teamspeak Group/Commander, Medium to Large: Generally less effective version of the Organized Teamspeak... Results vary wildly, depending on quality of commander and/or if there is a core of (usually random) players who can/will rally on the commander to 'get err done' when he asks/types for it, despite the firefight/skirmishing going on all around em. Well, if there is anything to get done other then the skirmish at hand anyways.
Mind you, some servers are way more organized then others in WvW.
Ehmry Bay for example is in the damn smack middle. Organized and dedicated base, but just not enough players and organization to get any further... but enough that they can still beat the other/lower servers.
Maguumi(sp?) is also in the same boat, but they beat Ehmry Bay constantly, while losing in the next tier up... I hail from Ehmry Bay.
There are thankless, unrewarding and boring jobs... like repairing damage on towers/keeps... running supply, watching for attacks on towers/keeps and defending camps.