At first I thought it was very anti-social too, then I found I was going about it the wrong way. First off, rarely will I get a response from a /shout - it just seems frowned upon I guess (unless it is in town to buy/sell I've got the rare hit). I've had huge success with the Party system.
Setting up a Party Recruitment with specific information usually has me a group in under 15 minutes. If you are vague you may be seeking for awhile. Usually I go for small parties, 6 or less. I am a THM main, so first off I set request for DoW x3 with +/- 5 levels of myself and DoM x2 +/- 5 levels of myself. I then set what general location I'll be grinding in, like Ul'dah, Limsa, etc. Finally in the message area I explain where I will be grinding like Nanasa Mines (sp?) and how long I expect to be there. Before I setup this recruitment I do a quick search to see if anyone has a party request already going.
Lastly, I'll give a shameless plug for my LS... :) If you are looking for some people to group with my LS is merging with one and forming an alliance with another in anticipation of the Company feature. I just (like yesterday) put up barbones forums if you want to check them out - http://Azure-FFXIV.DynDNS.org/
Right now there isn't much on there, but it'll grow in time. Shoot me a tell in game if you want a pearl.