ThoughtStreams pricing; I like the idea of a Pinboard model. A one-off fee that rises as the popularity of the platform rises (and therefore the utility).
The key purchase point for me is buying unlimited streams. Right now I'd like to create more streams given that large streams rapidly get unwieldy in the current UI. However if I upgrade and then downgrade, what happens to the existing streams? It's not clear.
I'd like to know that once I've purchased something it can persist indefinitely.
I am indifferent about posting media since that currently isn't my use case. I would be more likely to link out.
I would like more analytics information and more collaboration/commenting features. But as a microblogging platform I think the market price is $5 a month.