A belated shame to see you go, you're right, social media has definitely taken its toll.
I think Forums still have their niche roles in the right places, though. Hoping all the Facebook controversy will be a positive boon for forum communities and honourable admins, as more people come to understand social media and it's infrastructure was never free, and so they unwittingly made a deal with the devil and probably sold their digital souls in the process.
Forums IMHO, are great for more in-depth topics of conversation that are good when it comes to easier to find and access long term information, whereas social media is more suited for keeping up with one's mates and for quick, disposable messages that don't really matter and sadly in many cases, to accommodate foul mouthed rants from people without the facts and a haven for trolls. Possibly this is the reason you hardly ever, if never, see Google results for social media and mostly results come from forums, blogs and websites.