How much do you use?

How much social media do you use? Or to get more specific- how much of a particular service do you use? For instance on twitter do you always use 140 characters? Do you use URL shorteners, image, video and audio posting services, hash tags? What about some of the newly release features on twitter - the you should follow @blah or @yadda. Or the you both follow @xy&z feature being rolled out. What about on facebook, flickr, You Tube, linkedin or any other social service. I started looking around at all the features that are rolling out on some of these services and those being taken away or mutating like facebook connect and boxes and wondered how much to we take advantage or need some of these services. If they get removed will we miss them or adapt to whatever we are handed or will we simply move on in a new direction. I am sure the true answer lies somewhere in the middle, some will adapt, some will move on and an extremely small segment would have issues moving at all and miss those features so much that they curl up into a little ball in the corner of the room and sob uncontrollably. Should the companies providing those services care or is it a simple a measured amount of "collateral damage" for bringing a better product to fruition. And what if it isn't a better product what should happen then? If the product isn't better, cheaper and faster, what then? In a real life example - and I will change as many names as possible or not use any names at all, to protect the innocent - a company changed the provider of their community software. The resulting move was supposed to increase the community use exponentially and be more robust and allow for a huge amount of customization. In actuality what happened was the software was less scalable then originally thought, customization was limited in core aspects of the and latency issues caused many users, including myself, to run away screaming. The software had plenty of add-ons and customization, just not in the community building portion. A better community experience was possibly the crux of the decision to migrate platforms. What the community ended up with was features it didn't need or use and a platform that was perceived as worse than the previous version. If content is king and I simply want to get status updates and info from my friends and colleagues should I want or care who are mutual friends are or others that follow them on twitter? I don't venture on to twitter as much as I used to but prefer using a desktop client to access my twitter stream. I get the things important to me - tweets from those I follow, the stuff I have tweeted and a quick glance at profile info for those I follow or individuals that have been retweeted and I want to know more about. And I think the same follows true for applications. I probably only use about 10% of the features in Photoshop and Illustrator. The percentage goes up a bit in Dreamweaver, maybe 40-50% but I doubt there is any piece of software where I end up using 100% of the features. I am curious does anyone out there use the full set of features for any piece of software or social application/service? Or what are your favorite features? I am sure a venn diagram of must used features would have an extremely large overlap.