Hmmm, I feel quite flattered, that someone sees my site as useful for information (content).
On my personal site, I ask people to suggest informative sites for me to link to. I also ask, that those that link to me, inform me, just in case I feel the same about their's. It is not obligatory, though.
Oh, when I said, "just for the sake of it", I didn't explain myself very well. I actually meant (honestly....) making link exchanges for the sake of getting a rise in position in the serps, which is 'not' always successful...
I will suggest myself to sites, those I think whose visitors would benefit from my content, while raising the kudos for themselves. I don't get upset when they don't use my suggestion, but I'm pleasantly surprised when an unknown links to me!
One of my clients sites, recently, got a link from The Times (London).
We found out (I was explaining what stats are, LOL), that he had visitors from The Times and on looking found an article about the site, with a link (must ask about getting the link text changed ;)). Me? Pleased as punch!
<cheeky>I hope you are not suggesting....snicker</cheeky>