Hey guys, trying to make a small contribution via promoting awareness of this ridiculously amazing site i just stumbled upon. Did a quick search and nothing came up, so if this is a repost, please forgive my semi-retardedness.
Said website is "openraid.us"; essentially what this website does is utilize the cross-realm raiding feature to help people connect and run raids/rated battlegrounds when a group may be otherwise impossible to find. For instance, if you're in a guild that cleared BoT and BWD back in the day, except for some reason you missed sinestra or something like that, there are always people posting advertisements for things like that so you can go back and get the Dragonslayer title or any of the amazing gear that drops from her. Another instance in which this is very helpful is in a situation similar to mine, where my mage was not needed during Firelands raiding and thus was not geared, but due to a recent absence is needed again; I've been running H FL raids for about 3 weeks and am closing in on getting dragonwrath. People also constantly do FL for the meta achievements and mounts. The only downside about this website is that you are unable to raid the dragon soul raid because cross-realm raiding has not yet been implemented with it in-game.
My apologies for the wall of text, but if you have any reason to do FL raids or previous ones, do yourself a favour and check this website out, its helped me a bunch, I'm about to get a legendary staff!