I see the value of .info's depending on a couple factors.
First, how well does it work with the extension. Is this the type of name people are likely to request info on? Because propagate has so many meanings (like six) I believe it is likely to receive inquiries for info. Among those definitions is to "breed". Anyone like to "breed" here?
Secondly, How does it do in Google? I consider a word above 7mil results as a fairly common word. Propagate produces over 12mil. Not bad!
Third, and most important IMO, how many other TLD's are currently taken? A word with 12mil results in Google, but only the .com is taken, is clearly not in high demand. On the flip side, a word that produces, say 1.2 million results in Google, but is gone in the Com, Net, Biz, US, Org, Mobi, etc... has an obvious level of demand that I think is worth purchasing over. This is the criteria I use for buying my .info's.
Propagate has 12 million results in Google and is gone in all other major extensions.
I am to trying to learn and understand how the values of .info's work, and have often been puzzled with this TLD. Maybe the value is, like Rockefeller says, only $20 at present. Values are going to increase in the near future. I know this!
How do I know this? The .info keywords, for the most part, no longer drop! Three months ago when I started domaining, I could "catch any .info I wanted. I had a system that was, well, faster. This has recently changed though. Registers like Enom, Spot and even GoDaddy sweep them up before they even have the chance to drop for regular civilians. This has been consistent for the past month, and started with Enom (hmm, has something changed recently with Enom ownership or something?).
All I know is that this alone may change the value of .info's. Are registers single handedly creating higher demand for this TLD. I believe so. Guys like Rockefeller may want to hang tight to see where the market goes before unloading to a seller.
However, I am just a newbie with a mere 34 post! What do I know?